JP7027969B2 - 半導体受光素子 - Google Patents
半導体受光素子 Download PDFInfo
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- JP7027969B2 JP7027969B2 JP2018040849A JP2018040849A JP7027969B2 JP 7027969 B2 JP7027969 B2 JP 7027969B2 JP 2018040849 A JP2018040849 A JP 2018040849A JP 2018040849 A JP2018040849 A JP 2018040849A JP 7027969 B2 JP7027969 B2 JP 7027969B2
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- 239000004065 semiconductor Substances 0.000 title claims description 274
- 230000004888 barrier function Effects 0.000 claims description 169
- 125000006850 spacer group Chemical group 0.000 claims description 93
- 230000031700 light absorption Effects 0.000 claims description 46
- 230000005684 electric field Effects 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229910005542 GaSb Inorganic materials 0.000 description 43
- 229910000673 Indium arsenide Inorganic materials 0.000 description 36
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 36
- 230000003287 optical effect Effects 0.000 description 8
- 230000004044 response Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005215 recombination Methods 0.000 description 4
- 230000006798 recombination Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022416—Electrodes for devices characterised by at least one potential jump barrier or surface barrier comprising ring electrodes
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/0304—Inorganic materials including, apart from doping materials or other impurities, only AIIIBV compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0352—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035236—Superlattices; Multiple quantum well structures
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0352—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
- H01L31/035281—Shape of the body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/102—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier
- H01L31/105—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier being of the PIN type
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Light Receiving Elements (AREA)
Description
アノード電極31は、フォトダイオード構造15に、具体的にはp型半導体領域23に接続される。カソード電極33は、支持体13に、具体的にはn型半導体領域17に接続される。
支持体13のベースBS:n型GaSb基板。
支持体13のn型半導体領域17:n型GaSbエピタキシャル層(500nm厚、1~3×1018cm-3)。
フォトダイオード構造15。
n型タイプII超格子構造49:n型InAs/GaSb超格子(350nm厚、1×1018cm-3)。
バリア構造19。
第1スペーサー半導体層25:p型InAs/GaSb超格子(300nm厚、1~2×1018cm-3)。
第1バリア層27:p型InAs/GaSb超格子(60nm厚、0.1~1×1016cm-3)。
第2スペーサー半導体層29:n型InAs/GaSb超格子(160nm厚、0.1~1×1016cm-3)。
第3バリア層43(正孔障壁層):n型InAs/GaSb超格子(300nm厚、1~2×1016cm-3)。
光吸収層21:p型InAs/GaSb超格子(1000nm厚、0.1~1×1016cm-3)。
第2バリア層41(電子障壁層):アンドープInAs/GaSb超格子(300nm厚)。
p型半導体領域23。
p型タイプII超格子構造45:p型InAs/GaSb超格子(250nm厚、1~2×1017cm-3)。
p型キャップ層47:p型GaSbバルク(200nm厚、1~3×1018cm-3)。
保護膜48;シリコン系無機絶縁膜(シリコン酸化物、SiO2、100nm~300nm)。
特性線、制御電極への印加電圧(V)。
C1、ゼロ。
C2、150mV(このバイアスは、要求に応じて50~150mV)の範囲において変更されることができる)。
C3、300mV(このバイアスは、要求に応じて150~300mV)の範囲において変更されることができる)。
「BVin」は、ビルトインポテンシャルを表す。
フォトダイオード構造1。
n型タイプII超格子構造2:n型InAs/GaSb超格子(350nm厚、1×1018cm-3)。
正孔障壁層3:n型InAs/GaSb超格子(300nm厚、1~2×1016cm-3)。
光吸収層4:p型InAs/GaSb超格子(1000nm厚、0.1~1×1016cm-3)。
電子障壁層5:アンドープInAs/GaSb超格子(300nm厚)。
p型半導体領域。
p型タイプII超格子構造6:p型InAs/GaSb超格子(250nm厚、1~2×1017cm-3)。
p型キャップ層7:p型GaSbバルク(200nm厚、1~3×1018cm-3)。
フォトダイオード構造15。
n型タイプII超格子構造49:n型InAs/GaSb超格子(350nm厚、1×1018cm-3)。
バリア構造19。
第1スペーサー半導体層25:p型InAs/GaSb超格子(300nm厚、1×1018cm-3)。
第1バリア層27:p型InAs/GaSb超格子(60nm厚、0.1~1×1016cm-3)。
第2スペーサー半導体層29:n型InAs/GaSb超格子(160nm厚、1×1016cm-3)。
第3バリア層43:n型InAs/GaSb超格子(300nm厚、1×1016cm-3)。
光吸収層21:p型InAs/GaSb超格子(1000nm厚、0.1×1016cm-3)。
第2バリア層41:アンドープInAs/GaSb超格子(300nm厚)。
p型半導体領域23。
p型タイプII超格子構造45:p型InAs/GaSb超格子(250nm厚、1~2×1017cm-3)。
p型キャップ層47:p型GaSbバルク(200nm厚、1~3×1018cm-3)。
また、半導体受光素子Dでは、制御電極への印加電圧は、ゼロである(第2電源PS2におけるゼロバイアス条件)。図6において、「C77」は、絶対温度77ケルビンにおける半導体受光素子Cの暗電流特性を示す。「D77」、「D150」及び「D210」は、それぞれ、絶対温度77ケルビン、150ケルビン及び210ケルビンにおける半導体受光素子Dの暗電流特性を示す。半導体受光素子Dの暗電流特性は、温度77~210ケルビンの範囲において、半導体受光素子Cの暗電流特性(絶対温度77ケルビン)より優れている。
アノード・カソード間への印加電圧(VOUT):-1.0ボルト(連続印加)。
制御電極への印加電圧(VCNT):-0.3ボルト(パルス印加)。
パルスハイ期間(TH):1マイクロ秒から1ミリ秒。
パルスロウ期間(TL):1ナノ秒から1マイクロ秒。
Claims (3)
- 半導体受光素子であって、
n型半導体領域を含む支持体と、
電子障壁を提供するバリア構造、赤外線に感応するバンドギャップを有するIII-V化合物半導体を含む光吸収層、及びp型半導体領域を含み、前記支持体上に設けられたフォトダイオード構造と、
を備え、
前記バリア構造は、第1スペーサー半導体層、第1バリア層及び第2スペーサー半導体層を含み、
前記p型半導体領域、前記光吸収層、前記第1スペーサー半導体層、前記第1バリア層、前記第2スペーサー半導体層、及び前記n型半導体領域は、第1軸の方向に配列され、
前記第1スペーサー半導体層及び前記第2スペーサー半導体層は、それぞれ、p導電性及びn導電性を有する、半導体受光素子。 - 半導体受光素子であって、
n型半導体領域を含む支持体と、
電子障壁を提供するバリア構造、赤外線に感応するバンドギャップを有するIII-V化合物半導体を含む光吸収層、及びp型半導体領域を含み、前記支持体上に設けられたフォトダイオード構造と、
を備え、
前記バリア構造は、第1スペーサー半導体層、第1バリア層及び第2スペーサー半導体層を含み、
前記p型半導体領域、前記光吸収層、前記第1スペーサー半導体層、前記第1バリア層、前記第2スペーサー半導体層、及び前記n型半導体領域は、第1軸の方向に配列され、
前記フォトダイオード構造は、前記p型半導体領域及び前記光吸収層を含む半導体メサを有し、
前記支持体及び前記半導体メサは、前記第1軸の方向に沿って配置され、
前記バリア構造は、前記第1スペーサー半導体層に接続された制御電極を更に備え、
前記制御電極は、前記n型半導体領域に接続されたカソード電極と前記制御電極との電位差に応じた電界を前記バリア構造に印加でき、前記電界の印加によって前記電子障壁の高さが調整される、半導体受光素子。 - 前記フォトダイオード構造は、前記p型半導体領域及び前記光吸収層を含む半導体メサを有し、
前記支持体及び前記半導体メサは、前記第1軸の方向に沿って配置され、
前記バリア構造は、前記第1スペーサー半導体層に接続された制御電極を更に備え、
前記制御電極は、前記n型半導体領域に接続されたカソード電極と前記制御電極との電位差に応じた電界を前記バリア構造に印加でき、前記電界の印加によって前記電子障壁の高さが調整される、請求項1に記載された半導体受光素子。
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JP2018040849A JP7027969B2 (ja) | 2018-03-07 | 2018-03-07 | 半導体受光素子 |
US16/293,010 US20190280148A1 (en) | 2018-03-07 | 2019-03-05 | Semiconductor light receiving device |
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US20140175286A1 (en) | 2012-12-21 | 2014-06-26 | Jarrod Vaillancourt | High Operating Temperature Quantum Dot Infrared Detector |
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