ORDERING EFFECTS ON THE ELECTRICAL CHARACTERISTICS OF GA0.5IN0.5P GROWN BY METALORGANIC CHEMICAL VAPOR-DEPOSITION

被引：27
|
作者：
LEE, MK
HORNG, RH
HAUNG, LC
机构：
[1] Institute of Electrical Engineering, National Sun Yat-Sen University, Kaohsiung
来源：
APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 25期
关键词：
D O I：
10.1063/1.105751
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The relationship between electrical characteristics and structural ordering in undoped and Zn-doped Ga0.5In0.5P films grown by metalorganic chemical vapor deposition is investigated. The Schottky diode was used to examine the electrical properties of the undoped samples with ordered and disordered structures. With the same carrier concentration (approximately 1.5 X 10(16) cm-3), the diode fabricated on the ordered film shows a degraded current-voltage characteristic. As the carrier concentration of Zn-doped Ga0.5In0.5P increases above 1.5 X 10(18) cm-3, the energy gap of the ordered structure is larger than that of the disordered structure. It was found that the hole mobility of the ordered film is lower than that of the disordered film with the similar doping level. The behavior could be attributed to the existence of antiphase boundaries within the ordered structure. The antiphase boundaries can act as recombination centers and/or scattering centers and result in the extraordinary electrical properties of the ordered samples.
引用
收藏
页码：3261 / 3263
页数：3
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