Visible-Light Self-Driven Photodetector with Enhanced Performance Based on CdS /Si Nanowire Heterojunction

被引：6

作者：

Jiang, Yurong ^{[1
]}

Zhai, Haifa ^{[1
]}

Cao, Weiwei ^{[1
]}

Yang, Haigang ^{[1
]}

Liu, Hairui ^{[1
]}

机构：

[1] Henan Normal Univ, Henan Key Lab Photovolta Mat, Coll Phys & Elect Engn, Xinxiang 453007, Peoples R China

来源：

ELECTRONIC MATERIALS LETTERS | 2016年 / 12卷 / 06期

关键词：

CdS/Si nanowires; shell/core structure; self-driven photodetector; SOLAR-CELLS; MULTIINTERFACE NANOHETEROJUNCTION; ELECTRICAL-PROPERTIES; ARRAYS; HETEROSTRUCTURE;

D O I：

10.1007/s13391-016-6091-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this article, the appealing application of the CdS/Si nanowire heterostructure as the self-driven photodetector was presented based on a facile successive ionic layer absorption and reaction. Compared to CdS /Si planar based device, photocurrent illuminated with light (532 nm) to dark-current ratio was enhanced significantly for CdS/Si nanowire based detector. Measurements of time resolved responses at zero bias were conducted, and the result also demonstrated that CdS/Si nanowire heterostructure had a high photosensitivity and fast photo-response as the self-driven visible light photodetector. Additionally, the corresponding mechanism for the phenomenon was discussed, and it is believed that such a high photoresponse comes from the improved optical absorption as well as the good carrier transfer and collection capability. The present CdS/Si core-shell heterojunction architectures are envisaged as potentially valuable candidates for next-generation photodectors.

引用

页码：841 / 845

页数：5

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