JP2007537587A - 半導体デバイス - Google Patents
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Abstract
Description
本発明は、半導体デバイスに関するものであって、更に詳細には、第1の表面と、第1の表面から第1の確定した距離だけ離れた第2の表面とを有する、第1の伝導型の半導体材料の第1の領域を含む半導体デバイスに関する。半導体デバイスは、例えば、放射線検出デバイス、太陽電池および高周波(RF)およびパワー・エレクトロニクスを含む電子応用に用いられる。
半導体放射線検出器の動作原理は、半導体材料の空乏化体積に基づく。半導体に入射する、バンド・ギャップよりも大きいエネルギーを有する放射線は、価電子帯の電子を伝導帯に励起する。価電子帯に電子が不足すること、これ以降は、正孔と呼ぶが、それと伝導帯の過剰電子は、半導体材料が中性である領域で再直ちに結合する。空乏化され非中性化体積では、状況が異なる。すなわち、電子・正孔対は、電界によって分離されて、自由なキャリア、すなわち、正孔又は再結合すべき相手となる伝導帯電子は存在しない。空乏化体積とそれの境界に近接する領域に吸収される放射線量は、放射線によって誘起された電子又は正孔の量を計測することによって測定できる。測定された電荷のタイプをこれ以降、信号電荷と呼び、反対の電荷タイプを二次電荷と呼ぶ。空乏化体積は、典型的には、pおよびn型の半導体材料の接合が逆バイアスされることによって生成する。逆バイアスされたpn接合の代わりに、順方向バイアスされたpn接合を使用することもできる。これが太陽電池のケースである。p型半導体材料は、価電子帯に過剰な正孔を付加する不純物原子をドープされ、また、n型半導体は、伝導帯に過剰な電子を付加する不純物原子をドープされる。どちらの型であっても過剰な電荷は、多数キャリアと呼ばれ、n又はp型のドーパントをドープされた領域は、n又はp型伝導度を有する領域と呼ばれる。
本発明の目的は、優れた感度を持ち、スミア耐性の高い放射線検出デバイスを提供することであり、その構造は、半導体ウエハ内部に最小量の放射線を感じない材料を含む。本発明の別の目的は、CTDおよびAPS構造の両方に対して適用可能な進歩した放射線検出デバイスを提供することである。本発明の更に別の目的は、動作速度を高め、電子機器の電圧処理能力を向上させるために、電力消費を低減するための手段を提供することである。
図1は、本発明に従う放射線検出デバイスの実施の形態を示す。デバイスは、以降で半導体基板100と呼ぶ第1の伝導型の第1の領域を含む。半導体基板100は、第1の表面101と第2の表面102とを有し、それらの表面間に第1の距離D1を有する。第1の表面101は、半導体基板100の境界の一部に対応し、前記一部は、放射線検出デバイスの2つの次元に広がっている。図1において、第1の表面101は、前面に対応し、以降で水平方向と呼ぶ2つの次元に広がっている。図1で、第2の表面102は、第1の表面と平行に延びて、裏面に対応しており、第1の表面から以降で垂直方向と呼ぶ垂直寸法に広がっている。
V=0V: dn=dp=1.7μm
V=10V: dn=dp=8.3μm
V=20V: dn=dp=12μm
V=50V: dn=dp=18μm
V=100V: dn=dp=26μm
V=0V: dn=0.027μm、 dp=2.7μm
V=10V: dn=0.12μm、 dp=12μm
V=20V: dn=0.16μm、 dp=16μm
V=50V: dn=0.26μm、 dp=26μm
V=100V: dn=0.36μm、 dp=36μm
V=0V: dn=dp=0.21μm
V=10V: dn=dp=0.84μm
V=20V: dn=dp=1.2μm
V=50V: dn=dp=1.8μm
V=100V: dn=dp=2.6μm
V=0V: dn=2.7μm、 dp=0.027μm
V=10V: dn=12μm、 dp=0.12μm
V=20V: dn=16μm、 dp=0.16μm
V=50V: dn=26μm、 dp=0.26μm
V=100V: dn=36μm、 dp=0.36μm
V=0V: dn=0.20μm、 dp=20μm
V=10V: dn=1.2μm、 dp=120μm
V=20V: dn=1.6μm、 dp=160μm
V=50V: dn=2.6μm、 dp=260μm
V=100V: dn=3.6μm、 dp=360μm
Claims (12)
- 半導体デバイスであって、
第1の表面(101)と、第1の表面から確定した第1の距離(D1)だけ離れた第2の表面(102)とを有する、第1の伝導型の半導体材料の第1の領域(100)を含み、
第1の表面(101)から半導体材料の第1の領域(100)中に第2の距離(D2)だけ突出した第2の伝導型の半導体材料の細長い空間要素(111、112、113)と、
動作時に、空間要素(111、112、113)を第2の伝導型の多数キャリアから完全に空乏化するように調節されたバイアス電圧源(140)と、
を含むことを特徴とする前記半導体デバイス。 - 請求項1記載の半導体デバイスであって、第2の距離(D2)が半導体材料の第1の領域(100)の第1の表面(101)における空間要素(311)の最小寸法(D3)よりも長いことを特徴とする前記半導体デバイス。
- 請求項1および2のうちの任意の項記載の半導体デバイスであって、第2の距離(D2)が半導体材料の第1の領域(100)の第1の表面(101)における空間要素(311)の最小寸法(D3)よりも少なくとも2倍長いことを特徴とする前記半導体デバイス。
- 請求項1から3のうちの任意の項記載の半導体デバイスであって、第2の距離(D2)が第1の距離(D1)に等しいことを特徴とする前記半導体デバイス。
- 請求項1から4のうちの任意の項記載の半導体デバイスであって、半導体デバイスの第1の表面に平行な断面領域(209)において、また第1の表面(101)と第2の距離(D2)との間で、第1の伝導型のドーパント原子の量が第2の伝導型のドーパント原子の量に本質的に等しいことを特徴とする前記半導体デバイス。
- 請求項5記載の半導体デバイスであって、断面領域が半導体デバイスの1つのピクセル(303)に対応することを特徴とする前記半導体デバイス。
- 請求項1から4のうちの任意の項記載の半導体デバイスであって、半導体デバイスの第1の表面に平行で、第1の表面(101)と第2の距離(D2)との間にある細長い空間要素の断面は、突出の深さとともに減少することを特徴とする前記半導体デバイス。
- 請求項1から4および7のうちの任意の項記載の半導体デバイスであって、空間要素のドーパント濃度が突出の深さに対して減少することを特徴とする前記半導体デバイス。
- 請求項1から4および7および8のうちの任意の項記載の半導体デバイスであって、半導体材料の第1の領域のドーパント濃度が第1の距離(D1)に沿って増加することを特徴とする前記半導体デバイス。
- 先行する請求項の任意の項記載の半導体デバイスであって、空間要素の半導体材料のドーパント濃度が1017cm−3よりも低いことを特徴とする前記半導体デバイス。
- 先行する請求項の任意の項記載の半導体デバイスであって、細長い空間要素が第1の伝導型の半導体材料の第1の領域(100)中に第1の表面(101)に対して垂直に突出することを特徴とする前記半導体デバイス。
- 先行する請求項の任意の項記載の半導体デバイスであって、第2の距離(D2)が少なくとも5μmであることを特徴とする前記半導体デバイス。
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FI20045172A FI20045172A0 (fi) | 2004-05-11 | 2004-05-11 | Säteilydetektorilaite |
FI20045475A FI20045475A0 (fi) | 2004-05-11 | 2004-12-13 | Säteilydetektorilaite |
FI20055057A FI20055057A (fi) | 2004-05-11 | 2005-02-08 | Puolijohdelaite |
PCT/FI2005/050148 WO2005109510A1 (en) | 2004-05-11 | 2005-05-10 | Semiconductor device |
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US (1) | US20070222012A1 (ja) |
EP (1) | EP1766685A1 (ja) |
JP (1) | JP2007537587A (ja) |
FI (1) | FI20055057A (ja) |
WO (1) | WO2005109510A1 (ja) |
Cited By (2)
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JP2017092149A (ja) * | 2015-11-05 | 2017-05-25 | ソニーセミコンダクタソリューションズ株式会社 | 撮像素子 |
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FI20051236A0 (fi) | 2005-12-01 | 2005-12-01 | Artto Mikael Aurola | Puolijohde apparaatti |
DE102011077383A1 (de) * | 2011-06-10 | 2012-12-13 | Siemens Aktiengesellschaft | Anordnung von zwei oder mehr Halbleiterbauelementen |
EP3619555B1 (en) * | 2017-05-03 | 2023-11-29 | Shenzhen Xpectvision Technology Co., Ltd. | Method of making radiation detector |
EP3477710B1 (en) * | 2017-10-26 | 2023-03-29 | STMicroelectronics (Research & Development) Limited | Avalanche photodiode and method of manufacturing the avalanche photodiode |
CN111863607B (zh) * | 2020-07-28 | 2023-05-05 | 哈尔滨工业大学 | 一种抗辐射功率晶体管及其制备方法 |
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US6800877B2 (en) * | 2000-05-26 | 2004-10-05 | Exaconnect Corp. | Semi-conductor interconnect using free space electron switch |
DE10061528C1 (de) * | 2000-12-11 | 2002-07-25 | Infineon Technologies Ag | Mittels Feldeffekt steuerbares Halbleiterbauelement |
JP2006140250A (ja) * | 2004-11-11 | 2006-06-01 | Toshiba Corp | 半導体装置及びその製造方法 |
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2005
- 2005-02-08 FI FI20055057A patent/FI20055057A/fi not_active Application Discontinuation
- 2005-05-10 WO PCT/FI2005/050148 patent/WO2005109510A1/en active Application Filing
- 2005-05-10 JP JP2007512240A patent/JP2007537587A/ja active Pending
- 2005-05-10 EP EP05739656A patent/EP1766685A1/en not_active Withdrawn
- 2005-05-10 US US11/596,054 patent/US20070222012A1/en not_active Abandoned
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US6204087B1 (en) * | 1997-02-07 | 2001-03-20 | University Of Hawai'i | Fabrication of three-dimensional architecture for solid state radiation detectors |
JP2000031451A (ja) * | 1998-07-13 | 2000-01-28 | Toshiba Corp | 固体撮像装置およびその製造方法 |
JP2001284604A (ja) * | 2000-03-31 | 2001-10-12 | Shindengen Electric Mfg Co Ltd | 半導体装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016111082A (ja) * | 2014-12-03 | 2016-06-20 | ルネサスエレクトロニクス株式会社 | 撮像装置 |
JP2017092149A (ja) * | 2015-11-05 | 2017-05-25 | ソニーセミコンダクタソリューションズ株式会社 | 撮像素子 |
Also Published As
Publication number | Publication date |
---|---|
EP1766685A1 (en) | 2007-03-28 |
FI20055057A0 (fi) | 2005-02-08 |
US20070222012A1 (en) | 2007-09-27 |
WO2005109510A1 (en) | 2005-11-17 |
FI20055057A (fi) | 2005-11-12 |
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