High-efficiency p-i-n detectors for the visible spectral range based on ZnSTe-ZnTe superlattices

被引：7

作者：

Faschinger, W ^{[1
]}

Ehinger, M ^{[1
]}

Schallenberg, T ^{[1
]}

Korn, M ^{[1
]}

机构：

[1] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany

来源：

APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 22期

关键词：

D O I：

10.1063/1.123359

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that ZnSTe-ZnTe superlattices, which are grown lattice matched on GaAs substrates by molecular-beam epitaxy, are well suited as a material for light detection in the visible spectral range. Due to their type-II band alignment, these superlattices have a small band gap compared to ZnSe and allow light detection for photon energies between 2.1 and 3.2 eV. In combination with ZnMgSSe, the response curve of the diodes shows a strong dependence on the applied reverse bias, so that they can be used as two-color devices. The obtained external quantum efficiencies are as high as 70%, and dark currents as low as 10(-12) A/mm(2) were obtained. (C) 1999 American Institute of Physics. [S0003-6951(99)05322-X].

引用

页码：3404 / 3406

页数：3

共 6 条

[1] High quantum efficiency II-VI photodetectors for the blue and blue-violet spectral range [J].