1991年
Fabrication and Characteristics of Al<inf>x</inf>Ga<inf>1-x</inf> as Heterojunction Phototransistors with Wide-Gap Window
IEEE Transactions on Electron Devices
- ,
- ,
- ,
- ,
- 巻
- 38
- 号
- 6
- 開始ページ
- 1310
- 終了ページ
- 1315
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1109/16.81656
The fabrication process and device characteristics of Al<
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Ga<
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As/Al<
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As heterojunction phototransistors are described. The interface between the emitter and base layers becomes rough with the increase in Al content of the emitter layer, and it causes a decrease in optical conversion gain of the heterojunction phototransistors. A spacer layer with the same Al content as that in the emitter layer is inserted between the emitter and base layers. Both the interface morphology and the optical conversion gain are improved. Enhanced by the avalanche multiplication in the base-collector junction, an optical conversion gain of 1500 is achieved in spite of the shorter diffusion length in the Al<
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Ga<
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As base layer. The device exhibits photoresponse in the range of 520–780 nm, i.e., from green to red light. © 1991 IEEE
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.<
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7<
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Ga<
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0<
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3<
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As/Al<
inf>
0<
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.<
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2<
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Ga<
inf>
0<
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.<
inf>
8<
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As heterojunction phototransistors are described. The interface between the emitter and base layers becomes rough with the increase in Al content of the emitter layer, and it causes a decrease in optical conversion gain of the heterojunction phototransistors. A spacer layer with the same Al content as that in the emitter layer is inserted between the emitter and base layers. Both the interface morphology and the optical conversion gain are improved. Enhanced by the avalanche multiplication in the base-collector junction, an optical conversion gain of 1500 is achieved in spite of the shorter diffusion length in the Al<
inf>
0<
/inf>
.<
inf>
2<
/inf>
Ga<
inf>
0<
/inf>
.<
inf>
8<
/inf>
As base layer. The device exhibits photoresponse in the range of 520–780 nm, i.e., from green to red light. © 1991 IEEE
- リンク情報
- ID情報
-
- DOI : 10.1109/16.81656
- ISSN : 1557-9646
- ISSN : 0018-9383
- SCOPUS ID : 0026170149