p-Cu2O-shell/n-TiO2-nanowire-core heterostucture photodiodes

被引：40

作者：

Tsai, Tsung-Ying ^{[2
,3
]}

Chang, Shoou-Jinn ^{[2
,3
]}

Hsueh, Ting-Jen ^{[1
]}

Hsueh, Han-Ting ^{[1
]}

Weng, Wen-Yin ^{[2
,3
]}

Hsu, Cheng-Liang ^{[4
]}

Dai, Bau-Tong ^{[1
]}

机构：

[1] Natl Nano Device Labs, Tainan 741, Taiwan

[2] Natl Cheng Kung Univ, Inst Microelect, Tainan 701, Taiwan

[3] Natl Cheng Kung Univ, Dept Elect Engn, Ctr Micro Nano Sci & Technol, Adv Optoelect Technol Ctr, Tainan 701, Taiwan

[4] Natl Univ Tainan, Dept Elect Engn, Tainan 700, Taiwan

来源：

NANOSCALE RESEARCH LETTERS | 2011年 / 6卷

关键词：

FILM; TIO2; CU2O;

D O I：

10.1186/1556-276X-6-575

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This study reports the deposition of cuprous oxide [Cu2O] onto titanium dioxide [TiO2] nanowires [NWs] prepared on TiO2/glass templates. The average length and average diameter of these thermally oxidized and evaporated TiO2 NWs are 0.1 to 0.4 mu m and 30 to 100 nm, respectively. The deposited Cu2O fills gaps between the TiO2 NWs with good step coverage to form nanoshells surrounding the TiO2 cores. The p-Cu2O/n-TiO2 NW heterostructure exhibits a rectifying behavior with a sharp turn-on at approximately 0.9 V. Furthermore, the fabricated p-Cu2O-shell/n-TiO2-nanowire-core photodiodes exhibit reasonably large photocurrent-to-dark-current contrast ratios and fast responses.

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页码：1 / 7

页数：7

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