Electronic Structure Engineering of Cu2O Film/ZnO Nanorods Array All-Oxide p-n Heterostructure for Enhanced Photoelectrochemical Property and Self-powered Biosensing Application

被引：170

作者：

Kang, Zhuo ^{[1
]}

Yan, Xiaoqin ^{[1
]}

Wang, Yunfei ^{[1
]}

Bai, Zhiming ^{[1
]}

Liu, Yichong ^{[1
]}

Zhang, Zheng ^{[1
]}

Lin, Pei ^{[1
]}

Zhang, Xiaohui ^{[1
]}

Yuan, Haoge ^{[1
]}

Zhang, Xueji ^{[2
]}

Zhang, Yue ^{[1
,3
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv & Mat, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Res Ctr Bioengn & Sensing Technol, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing, Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

中国国家自然科学基金;

关键词：

SOLAR-CELLS; GLUTATHIONE; HETEROJUNCTION; ELECTRODEPOSITION; FABRICATION;

D O I：

10.1038/srep07882

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We have engineered the electronic structure at the interface between Cu2O and ZnO nanorods (NRs) array, through adjusting the carrier concentration of Cu2O. The electrodeposition of Cu2O at pH 11 acquired the highest carrier concentration, resulting in the largest interfacial electric field between Cu2O and ZnO, which finally led to the highest separation efficiency of photogenerated charge carriers. The optimized Cu2O/ ZnO NRs array p-n heterostructures exhibited enhanced PEC performance, such as elevated photocurrent and photoconversion efficiency, as well as excellent sensing performance for the sensitive detection of glutathione (GSH) in PBS buffer even at applied bias of 0 V which made the device self-powered. Besides, the favorable selectivity, high reproducibility and extremely wide detection range, make such heterostructure a promising candidate for PEC biosensing applications, probably for the extended field of PEC water splitting or other solar photovoltaic beacons.

引用

页数：7

共 39 条

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