WO2004113854A1 - 入射光の測定方法及びそれを用いた分光機構を有するセンサー - Google Patents
入射光の測定方法及びそれを用いた分光機構を有するセンサー Download PDFInfo
- Publication number
- WO2004113854A1 WO2004113854A1 PCT/JP2004/004210 JP2004004210W WO2004113854A1 WO 2004113854 A1 WO2004113854 A1 WO 2004113854A1 JP 2004004210 W JP2004004210 W JP 2004004210W WO 2004113854 A1 WO2004113854 A1 WO 2004113854A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diffusion layer
- incident light
- sensor
- gate voltage
- electrons
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/30—Measuring the intensity of spectral lines directly on the spectrum itself
- G01J3/32—Investigating bands of a spectrum in sequence by a single detector
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/10—Integrated devices
- H10F39/12—Image sensors
- H10F39/18—Complementary metal-oxide-semiconductor [CMOS] image sensors; Photodiode array image sensors
- H10F39/182—Colour image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F30/00—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors
- H10F30/20—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors
- H10F30/21—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F30/00—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors
- H10F30/20—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors
- H10F30/21—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation
- H10F30/28—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation the devices being characterised by field-effect operation, e.g. junction field-effect phototransistors
- H10F30/2823—Individual radiation-sensitive semiconductor devices in which radiation controls the flow of current through the devices, e.g. photodetectors the devices having potential barriers, e.g. phototransistors the devices being sensitive to infrared, visible or ultraviolet radiation the devices being characterised by field-effect operation, e.g. junction field-effect phototransistors the devices being conductor-insulator-semiconductor devices, e.g. diodes or charge-coupled devices [CCD]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
Definitions
- the present invention relates to a method for measuring incident light and a spectroscopic sensor using the same, and more particularly, to a method for measuring incident light for detecting the wavelength and intensity of light entering a semiconductor device and a sensor having a spectroscopic function using the same. It is about one. Background art
- Image sensors used in single-panel video cameras mount red, green, and blue filters on each photodetector (eg, photodiode) to obtain a blank image.
- photodetector eg, photodiode
- an optical prism is used to divide incident light into three lights, red, green, and blue, and each light is detected by three image sensors.
- spectroscopy is performed using a grating or the like, and the intensity distribution of each light is measured using a power meter or the like. The measurement was being performed.
- the configuration of the device becomes large because a grating or the like is used.
- the present invention has been made in view of the above circumstances, and provides a method for measuring incident light using a simple semiconductor structure and a sensor having a spectroscopic function using the same, provided with a single electron capturing unit corresponding to incident light.
- the purpose is to do.
- an electrode film that transmits the incident light and to which a gate voltage is applied and a diffusion layer that captures electrons generated by the incident light via an insulating film below the electrode film are provided.
- the incident light can be measured. Is characterized by measuring the wavelength and intensity.
- a semiconductor substrate In the spectroscopic sensor, a semiconductor substrate, a first diffusion layer formed on the semiconductor substrate, a second diffusion layer formed on a portion of the first diffusion layer, and the first diffusion layer An electrode film formed thereon via an insulating film, through which incident light is transmitted, and to which a gate voltage is applied, wherein the gate voltage is changed to generate the first diffusion layer by the incident light.
- the first diffusion layer includes a p-type diffusion layer
- the second diffusion layer includes an n + diffusion layer
- the semiconductor substrate includes an n-type semiconductor substrate.
- FIG. 1 is a perspective view showing a partial cross section of a spectroscopic sensor 1 for measuring incident light according to an embodiment of the present invention.
- FIG. 2 is a characteristic diagram of the spectroscopic sensor when V g is ⁇ 1 V.
- FIG. 3 is a characteristic diagram of the spectral sensor 1 when V g is 0 V.
- FIG. 4 is a characteristic diagram of the spectral sensor 1 when V g is 1 V.
- FIG. 5 is a characteristic diagram of the spectral sensor 1 when V g is 2 V.
- FIG. 6 is a characteristic diagram of the spectral sensor 1 when V g is 3 V. .
- FIG. 7 is a characteristic diagram of the spectroscopic sensor when V g is 4 V.
- FIG. 8 is a characteristic diagram of the spectral sensor 1 when V g is 5 V.
- FIG. 9 shows the depth of the p-type diffusion layer when the applied voltage to the substrate is 5 V and Vg is 0 V (corresponding to FIG. 3), which indicates the embodiment of the present invention, is 10 m (Z coordinate).
- FIG. 7 is a characteristic diagram of the spectroscopic sensor 1 when (full scale) is set.
- FIG. 10 shows an embodiment of the present invention in which the applied voltage to the substrate is 10 V and Vg is 0 V.
- FIG. 9 is a characteristic diagram of the spectral sensor when the depth of the p-type diffusion layer is set to 10 ⁇ m (Z coordinate full scale).
- FIG. 11 is a plan view of a single spectral sensor of the present invention.
- FIG. 12 is an overall plan view of a spectroscopic sensor (4 ⁇ 4) of the present invention.
- FIG. 13 is a configuration diagram of a color-filled colorless image sensor system showing an application example of the present invention.
- the present invention focuses on the fact that if the depth (position) at which electrons generated by light can be collected and their current can be measured, the wavelength information of the incident light can be determined by the following method ( Of course, holes generated simultaneously with electrons may be stored). For example, suppose that light of two wavelengths ( ⁇ 1 and L 2) is incident simultaneously with intensity and A 2 . When the current generated by the electrons generated from the surface to the distance of the electron capture position Wi was measured, the current was I ,.
- I 2 Measured current value when the electron capture position is W 2 [A]
- c is the speed of light
- S is the area of the light receiving part
- h is the energy of light
- q is the electron volt
- all are known values except for the incident light intensities A i and A 2.
- the incident light when the incident light is separated into three wavelengths, the current I 3 in the case of the electron capturing position W 3 in Equation (1) increases. After that, by performing calculations in the same way as for two wavelengths, the incoming light can be separated into three wavelengths.
- Equation (1) expresses these equations separately for each wavelength.
- FIG. 1 is a perspective view showing a partial cross section of a spectroscopic sensor for measuring incident light according to an embodiment of the present invention.
- 1 is an n-type silicon substrate (n-type substrate)
- 2 is a p-type diffusion layer formed in the n-type silicon substrate 1 (p-type layer (p-type we 1 1))
- 3 is a p-type diffusion N + diffusion layer formed at the site of layer 2
- 4 is a silicon oxide (Sio 2 ) film formed on p-type diffusion layer 2
- 5 is connected to n + diffusion layer 3
- 6 is an electrode connected to the p-type diffusion layer 2 and grounded
- 7 is a polycrystalline silicon film (P) formed on the silicon oxide film 4 and doped with impurities.
- 0 1 y—S i) and 8 are gate electrodes connected to the polycrystalline silicon film 7, and the polycrystalline silicon film 7 functions as an electrode that can transmit light through the silicon oxide film 4.
- a p-type diffusion layer 2 is provided on an n-type silicon substrate 1 and a silicon oxide
- the structure is such that a polycrystalline silicon film (poly-Si) 7 to which an impurity is added as an electrode capable of transmitting light through the film 4 is arranged.
- an n + diffusion layer 3 is arranged to extract the captured electrons to the outside.
- the p-type diffusion layer 2 and the n-type silicon substrate 1 are provided with contacts for taking out wiring in order to keep their potentials constant.
- FIG. 2 to 8 are characteristic diagrams of the spectroscopic sensor shown in FIG. 1, FIG. 2 shows a case where Vg is one IV, FIG. 3 shows a case where Vg is 0 V, and FIG. 5 Vg is 2 V, Fig. 6 is Vg is 3 V, Fig. 7 is Vg is 4 V, Fig. 8 is Vg is 5 V Respectively.
- Vg indicates a gate voltage (potential of the gate electrode 8).
- 0.0 on the Z coordinate axis indicates the surface of the p-type diffusion layer
- the solid line indicates the depth (capture position) W from the surface of the p-type diffusion layer that captures electrons
- B indicates the p-pell portion
- C indicates a pn junction with the substrate (shown in FIG.
- the concentration of each impurity is as follows: p-type diffusion layer 2 has 2 ⁇ 10 15 cm ⁇ 3 (junction depth 5 um), n-type silicon substrate 1 has 1.5 ⁇ 10 14 cm_ 3 , silicon oxide When the thickness of the oxide film 4 is 65 nm, the potential of the gate electrode 8 is changed from -1 V to 5 V (FIGS. 2 to 8) (applied voltage of 5 V to the n-type silicon substrate 1). ), The depth W at which electrons are captured from the surface of the P-type diffusion layer 2 varies from to 2.3 m.
- FIG. 9 shows the embodiment of the present invention in which the depth of the p-type diffusion layer is 1 O wm (Z coordinate full) when the applied voltage to the substrate is 5 V and V g is 0 V (corresponding to FIG. 3).
- FIG. 10 is a characteristic diagram of the spectroscopic sensor 1 in the case where the scale is set as FIG. 10.
- FIG. 10 shows the depth of the p-type diffusion layer when the applied voltage to the substrate is 10 V and Vg is 0 V according to the embodiment of the present invention.
- FIG. 9 is a characteristic diagram of the spectroscopic sensor in the case of (a). In these figures,
- Fig. 11 and Fig. 12 show the actual structures (photos) of this structure.
- FIG. 11 shows a plan view of the single spectral sensor
- FIG. 12 shows a plan view of the entire spectral sensor (4 ⁇ 4).
- Table 1 shows the results of measurements using two types of light emitting diodes (blue and red) whose wavelengths are actually known in the device actually manufactured according to the present invention.
- a gate voltage of, for example, 1 V is applied to the polycrystalline silicon film 7 to which an impurity to which a gate voltage is applied while transmitting incident light is applied, and a current flowing at that time is read.
- a mechanical device such as a grating is conventionally required to decompose the wavelength of light.
- the wavelength of the incident light can be plotted with a resolution of 100. It is now possible to divide light into wavelengths, and no grating is required.
- the present invention has the following applications.
- FIG. 13 is a block diagram of a color image sensor system without a color filter showing an application example of the present invention.
- 11 is a spectroscopic sensor array
- 12 is a vertical selector (V. Scanner)
- 13 is a sound canceling circuit (column (Co 1 umn) CDS).
- 14 is a horizontal selector (H. V s igl is optical signal output 1, V sig 2 is optical signal output 2, V sig 3 is optical signal output 3, and V bN and V bP are low current drive biases.
- the spectroscopic sensors of the present invention are arranged one-dimensionally or two-dimensionally, and the signals are read out by switching the spectroscopic sensor arrays 11 together with the shift register.
- a noise removing circuit 13 is also incorporated in the output section of the signal. For example, the depth (position) at which electrons are captured is changed every 180th of a second, and the signal at that time is measured. From these signals, the intensity of each wavelength of red, green, and blue is calculated, and a color image signal is output.
- a bioreaction utilizes a fluorescence reaction.
- fluorescence is observed by irradiating short-wavelength light (excitation light) to generate fluorescence.
- excitation light short-wavelength light
- image sensors the fluorescence is hidden by the excitation light, so a band-pass filter that allows only the fluorescence without passing the excitation light is used. Therefore, the device becomes large.
- the spectroscopic sensor of the present invention only the fluorescence excluding the excitation light can be It can be measured without a filter.
- a color image sensor without a color filter can be provided as an application of the spectral sensor.
- the method for measuring incident light of the present invention and a sensor having a spectroscopic mechanism using the same can be used for a spectroscopic sensor and a color image sensor without a color filter as an application thereof.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Spectrometry And Color Measurement (AREA)
- Light Receiving Elements (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/561,954 US7465915B2 (en) | 2003-06-23 | 2004-03-25 | Measuring method of incident light and sensor having spectroscopic mechanism employing it |
| EP04723397.8A EP1645855B1 (en) | 2003-06-23 | 2004-03-25 | Measuring method of incident light and sensor having spectroscopic mechanism employing it |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003177425A JP4073831B2 (ja) | 2003-06-23 | 2003-06-23 | 入射光の測定方法及びそれを用いた分光機構を有するセンサー |
| JP2003-177425 | 2003-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004113854A1 true WO2004113854A1 (ja) | 2004-12-29 |
Family
ID=33534959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/004210 Ceased WO2004113854A1 (ja) | 2003-06-23 | 2004-03-25 | 入射光の測定方法及びそれを用いた分光機構を有するセンサー |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7465915B2 (ja) |
| EP (1) | EP1645855B1 (ja) |
| JP (1) | JP4073831B2 (ja) |
| KR (1) | KR100783335B1 (ja) |
| CN (1) | CN100565137C (ja) |
| WO (1) | WO2004113854A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009168742A (ja) * | 2008-01-18 | 2009-07-30 | Sony Corp | 分光センサ、固体撮像素子及び撮像装置 |
| CN118841474A (zh) * | 2024-05-17 | 2024-10-25 | 南开大学 | 一种识别颜色的光浮栅器件、制备方法和应用方法 |
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| US20070276714A1 (en) * | 2006-05-15 | 2007-11-29 | Sap Ag | Business process map management |
| ITMI20062352A1 (it) * | 2006-12-06 | 2008-06-07 | Milano Politecnico | Struttura fotosensibile al colore di una radiazione luminosa |
| JP4654446B2 (ja) * | 2007-03-28 | 2011-03-23 | 独立行政法人国立高等専門学校機構 | アバランシェフォトダイオードを用いた波長スペクトル検出方法 |
| US8127237B2 (en) | 2007-09-24 | 2012-02-28 | Sap Ag | Active business client |
| JP2009180512A (ja) * | 2008-01-29 | 2009-08-13 | Fujifilm Corp | 分光センサー、分光センサーを利用した蛍光検出方法および蛍光検出装置 |
| EP2293033A1 (en) * | 2008-06-09 | 2011-03-09 | National University Corporation Toyohashi University of Technology | Spectroscopic device, and method for driving the device |
| JP2009302319A (ja) * | 2008-06-13 | 2009-12-24 | Rohm Co Ltd | 分光機能を有する光電変換素子およびこれを用いたイメージセンサー |
| US8712953B2 (en) * | 2009-03-25 | 2014-04-29 | Sap Ag | Data consumption framework for semantic objects |
| CN102395873A (zh) * | 2009-04-13 | 2012-03-28 | 奥林巴斯株式会社 | 荧光传感器、针式荧光传感器以及测量分析物的方法 |
| JP5488030B2 (ja) * | 2010-02-19 | 2014-05-14 | 株式会社Jvcケンウッド | 受光素子 |
| DE102010043822B4 (de) | 2010-11-12 | 2014-02-13 | Namlab Ggmbh | Fotodiode und Fotodiodenfeld sowie Verfahren zu deren Betrieb |
| JP5669206B2 (ja) * | 2011-03-29 | 2015-02-12 | 独立行政法人国立高等専門学校機構 | 波長スペクトル検出方法 |
| KR101909915B1 (ko) | 2011-07-14 | 2018-10-19 | 고꾸리쯔 다이가꾸 호우징 도요하시 기쥬쯔 가가꾸 다이가꾸 | 화학·물리현상 검출방법 및 그 장치 |
| US9482641B2 (en) | 2011-08-12 | 2016-11-01 | National University Corporation Toyohashi University Of Technology | Device and method for detecting chemical and physical phenomena |
| US8916873B2 (en) | 2011-09-14 | 2014-12-23 | Infineon Technologies Ag | Photodetector with controllable spectral response |
| JP2016009739A (ja) * | 2014-06-24 | 2016-01-18 | ソニー株式会社 | 撮像素子、電子機器 |
| JP7711063B2 (ja) * | 2019-12-20 | 2025-07-22 | アリエル サイエンティフィック イノベーションズ リミテッド | 光信号から情報を抽出する方法及びシステム |
| CN113654671B (zh) * | 2021-08-17 | 2022-08-12 | 欧梯恩智能科技(苏州)有限公司 | 基于窄带隙半导体的光波长解调结构、解调方法及传感器 |
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| US4057819A (en) | 1976-08-05 | 1977-11-08 | Alan Ernest Owen | Semiconductor device |
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| JPH09237887A (ja) * | 1997-02-21 | 1997-09-09 | Hitachi Ltd | 半導体装置 |
| JP2001007323A (ja) * | 1999-06-25 | 2001-01-12 | Sanyo Electric Co Ltd | 半導体装置の製造方法 |
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2003
- 2003-06-23 JP JP2003177425A patent/JP4073831B2/ja not_active Expired - Fee Related
-
2004
- 2004-03-25 WO PCT/JP2004/004210 patent/WO2004113854A1/ja not_active Ceased
- 2004-03-25 CN CNB2004800176427A patent/CN100565137C/zh not_active Expired - Fee Related
- 2004-03-25 EP EP04723397.8A patent/EP1645855B1/en not_active Expired - Lifetime
- 2004-03-25 KR KR1020057024708A patent/KR100783335B1/ko not_active Expired - Fee Related
- 2004-03-25 US US10/561,954 patent/US7465915B2/en not_active Expired - Fee Related
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| US4057819A (en) | 1976-08-05 | 1977-11-08 | Alan Ernest Owen | Semiconductor device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009168742A (ja) * | 2008-01-18 | 2009-07-30 | Sony Corp | 分光センサ、固体撮像素子及び撮像装置 |
| CN118841474A (zh) * | 2024-05-17 | 2024-10-25 | 南开大学 | 一种识别颜色的光浮栅器件、制备方法和应用方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1645855A4 (en) | 2010-09-22 |
| US20060244089A1 (en) | 2006-11-02 |
| CN1809732A (zh) | 2006-07-26 |
| EP1645855A1 (en) | 2006-04-12 |
| EP1645855B1 (en) | 2013-06-19 |
| KR20060023573A (ko) | 2006-03-14 |
| KR100783335B1 (ko) | 2007-12-07 |
| JP4073831B2 (ja) | 2008-04-09 |
| JP2005010114A (ja) | 2005-01-13 |
| US7465915B2 (en) | 2008-12-16 |
| CN100565137C (zh) | 2009-12-02 |
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