High performance MoO3-x/Si heterojunction photodetectors with nanoporous pyramid Si arrays for visible light communication application

被引：43

作者：

Liu, Yujin ^{[1
]}

Cen, Guobiao ^{[1
]}

Wang, Gai ^{[1
]}

Huang, Junwei ^{[1
]}

Zhou, Suhang ^{[1
]}

Zheng, Jingbo ^{[1
]}

Fu, Yong ^{[1
]}

Zhao, Chuanxi ^{[1
]}

Mai, Wenjie ^{[1
,2
]}

机构：

[1] Jinan Univ, Dept Phys, Guangdong Prov Engn Technol Res Ctr Vacuum Coatin, Siyuan Lab, Guangzhou 510632, Guangdong, Peoples R China

[2] Jinan Univ, Guangzhou Municipal Key Lab Engn Technol Visible, Guangzhou 510632, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2019年 / 7卷 / 04期

基金：

中国国家自然科学基金;

关键词：

SOLAR-CELLS; HIGH-SPEED; SILICON; ULTRAVIOLET; FABRICATION; NANOWIRES; CONTACTS; VOLTAGE; FILMS;

D O I：

10.1039/c8tc05850d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Molybdenum oxides have emerged as an important entity for optoelectronics due to their wide band gap and carrier-selective transportation property. However, there is little progress in the development of high-performance molybdenum oxide based photodetectors. Herein, a fast response and high detectivity (approximate to 1.27 x 10(13) Jones) photodetector based on the asymmetric heterojunction of MoO3-x/Si with a nanoporous pyramid array (NPPA) Si structure was reported. The device shows a broad linear dynamic range (LDR) over 116.6 dB and bandwidth over 50 kHz. Furthermore, the temperature-dependence of photoresponse was systematically investigated to probe the carrier transportation within the heterojunction. A model is proposed in which carrier diffusion dominates the photoresponse performance. Finally, the temperature-resistant NPPA based heterojunction photodetector is successfully integrated into a visible light communication system and its application as an optical signal receiver for transmitting texts is demonstrated. These findings suggest that our transition metal oxide based asymmetric heterojunction photodetectors have great application potential in optical communication.

引用

页码：917 / 925

页数：9

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