共 14 条
Resonant-cavity-enhanced heterostructure metal-semiconductor-metal photodetector
被引:18
作者:

Chen, XY
论文数: 0 引用数: 0
h-index: 0
机构:
Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA

Nabet, B
论文数: 0 引用数: 0
h-index: 0
机构: Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA

Quaranta, F
论文数: 0 引用数: 0
h-index: 0
机构: Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA

Cola, A
论文数: 0 引用数: 0
h-index: 0
机构: Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA

Currie, M
论文数: 0 引用数: 0
h-index: 0
机构: Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA
机构:
[1] Drexel Univ, Dept Elect & Comp Engn, Philadelphia, PA 19104 USA
[2] CNR, IME, I-73100 Lecce, Italy
[3] USN, Res Lab, Washington, DC 20375 USA
关键词:
D O I:
10.1063/1.1470224
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We report a GaAs-based high-speed, resonant-cavity-enhanced, heterostructure metal-semiconductor-metal photodetector with Al0.24Ga0.76As/Al0.9Ga0.1As distributed Bragg reflector operating around 850 nm. The photocurrent spectrum shows a clear peak at this wavelength with full width at half maximum (FWHM) of around 30 nm. At resonance wavelength, a seven-fold increase can be achieved in quantum efficiency compared to a detector of the same absorption depth. The top reflector is a delta modulation doped Al0.24Ga0.76As that also acts as the barrier enhancement layer thus providing very low dark current values. The breakdown voltage is above 20 V. Time response measurements show rise time, fall time, and FWHM of 8.8 ps, 9 ps, and 8.1 ps, respectively, giving a 3-dB bandwidth of about 33 GHz. Combination of low dark current, fast response, wavelength selectivity, and compatibility with high electron mobility transistors makes this device especially suitable for short haul communications purposes. (C) 2002 American Institute of Physics.
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页码:3222 / 3224
页数:3
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