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Voltage-source controlled double-emitter phototransistors grown by low-pressure MOCVD

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6 Author(s)
Tan, S.W. ; Dept. of Electr. Eng., Nat. Taiwan Ocean Univ., Keelung, Taiwan ; Chen, H.R. ; Chu, M.Y. ; Hsu, M.K.
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Single- and double-emitter heterojunction phototransistors with the same total emitter area have been fabricated and qualitatively investigated. The double emitters in two kinds of DE-HPTs are designed to have area ratio of 1:1 and 1:2, respectively. Both a positive and a negative voltage applied to the second emitter can control and enhance the collector photocurrent. It is found that 1:2 and 1:1 DE-HPTs exhibit 1.85- and 1.5-fold optical gain of that from a SE-HPT, respectively.

Published in:

Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International

Date of Conference:

6-10 Sept. 2004