Co-sensitization of vertically aligned TiO2 nanotubes with two different sizes of CdSe quantum dots for broad spectrum

被引：102

作者：

Lee, Wonjoo ^{[3
]}

Kang, Soon Hyung ^{[1
,2
]}

Min, Sun Ki ^{[3
]}

Sung, Yung-Eun ^{[1
,2
]}

Han, Sung-Hwan ^{[3
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151742, South Korea

[2] Seoul Natl Univ, Interdisciplinary Program Nanosci & Technol, Seoul 151742, South Korea

[3] Hanyang Univ, Dept Chem, Seoul 133791, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 10期

关键词：

Quantum dots-sensitized solar cells; Co-sensitization; TiO2; nanotube; CdSe; Spectral broadening;

D O I：

10.1016/j.elecom.2008.08.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In order to absorb a broad spectrum in the visible region, vertically aligned TiO2 nanotubes (TONTs) were co-sensitized by two different sizes of CdSe quantum dots (Q dots). The power conversion efficiency of co-sensitized Q dots solar cells showed 1.20%. The co-sensitization of Q dots showed higher performance than the single size sensitization. The incident photon-to-current conversion efficiency of co-sensitized TONTs electrode showed two absorption peaks at 520 and 550 nm demonstrating the sensitization of Q dots with two different sizes. This efficiency enhanced charge harvesting efficiency over the entire visible spectrum, particularly the 500-600 nm wavelength domains. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1579 / 1582

页数：4

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