Surface states in TiO2 submicrosphere films and their effect on electron transport
Surface states in TiO2 submicrosphere films and their effect on electron transport
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TiO2 亚微球薄膜的表面态及其对电子传输的影响
DOI：
10.1007/s12274-017-1577-4
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发表时间：
2017-06
期刊：
影响因子：
9.9
通讯作者：
Dai Songyuan
中科院分区：
文献类型：
--
作者：
Zheng Jiawei;Mo Li'e;Chen Wangchao;Jiang Ling;Ding Yong;Li Zhaoqian;Hu Linhua;Dai Songyuan
由于其特殊的三维网络结构和高比表面积，TiO2亚微球已广泛用作太阳能电池光电阳极中的电子导体。近年来，TiO2亚微球在太阳能电池中的应用极大地提高了光伏性能。然而，TiO2 网络中的众多表面态不可避免地影响电子传输。在这项工作中，通过电荷提取方法对TiO2亚微球的表面态进行了深入研究，并通过循环伏安法证实了结果。结果表明，氨水可以有效减少TiO2亚微球的表面态数量。此外，深入的表征表明氨将导带移向更正的电位并改善界面电荷转移。此外，有效地防止了电荷复合。总体而言，电池性能本质上取决于表面态的影响，表面态影响电子转移和复合过程。
Owing to their special three-dimensional network structure and high specific surface area, TiO2 submicrospheres have been widely used as electron conductors in photoanodes for solar cells. In recent years, utilization of TiO2 submicrospheres in solar cells has greatly boosted the photovoltaic performance. Inevitably, however, numerous surface states in the TiO2 network affect electron transport. In this work, the surface states in TiO2 submicrospheres were thoroughly investigated by charge extraction methods, and the results were confirmed by the cyclic voltammetry method. The results showed that ammonia can effectively reduce the number of surface states in TiO2 submicrospheres. Furthermore, in-depth characterizations indicate that ammonia shifts the conduction band toward a more positive potential and improves the interfacial charge transfer. Moreover, charge recombination is effectively prevented. Overall, the cell performance is essentially dependent on the effect of the surface states, which affects the electron transfer and recombination process.
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TiO2 亚微球薄膜作为高效钙钛矿太阳能电池的支架层
影响因子：
9.5
作者：
Huang, Yang;Zhu, Jun;Dai, Songyuan
通讯作者：
Dai, Songyuan
影响因子：
6.6
作者：
S. Kang;Jae-Yup Kim;Y. Sung
通讯作者：
S. Kang;Jae-Yup Kim;Y. Sung
DOI：
10.1021/jp050822o
发表时间：
2005-07
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
M. Bailes;P. Cameron;K. Lobato;L. Peter
通讯作者：
M. Bailes;P. Cameron;K. Lobato;L. Peter
影响因子：
3.7
作者：
Qing Wang;Zhipan Zhang;S. Zakeeruddin;M. Graetzel
通讯作者：
Qing Wang;Zhipan Zhang;S. Zakeeruddin;M. Graetzel
影响因子：
5.4
作者：
Duffy, NW;Peter, LM;Wijayantha, KGU
通讯作者：
Wijayantha, KGU