Fabrication of multilayer 1D TiO2/CdS/ZnS with high photoelectrochemical performance and enhanced stability

Fabrication of multilayer 1D TiO2/CdS/ZnS with high photoelectrochemical performance and enhanced stability
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具有高光电化学性能和增强稳定性的多层一维 TiO2/CdS/ZnS 的制备

DOI:
10.1016/j.jallcom.2021.161329
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发表时间:
2021-12
影响因子:
6.2
通讯作者:
Yinyin Qian
Yinyin Qian
中科院分区:
材料科学2区
文献类型:
--
作者:
Weiqi Dang;Kaijia Xu;Liqiang Zhang;Yinyin Qian

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纳米TiO 2以其良好的禁带宽度和光电发射特性成为新型太阳能电池应用的基本光阳极材料。然而,传统的TiO 2基光阳极薄膜的光响应弱,容易复合的限制。本文通过连续离子层吸附反应(SILAR)的方法合成了均匀的CdS量子点,增加了光吸收范围,并通过在TiO 2/CdS上覆盖ZnS钝化层,减少了光生电子/空穴的复合。光电流响应(i-t)、光电流密度-电压(J-V)曲线表明,TiO 2/CdS/ZnS的光电转换效率(η)达到了3.43%,比纯TiO 2和TiO 2/CdS分别提高了230%和33%。
Nano TiO2is a basic photoanode material in the application of new type solar cell for its appropriate bandgap and photoemission. However, traditionally TiO2-based photoanode films are limited in weak photoresponse and effortless recombination. Herein, we increase light absorption range through combined the uniform CdS quantum dots (QDs) by successive ionic layer adsorption reaction (SILAR) method and decrease the recombination of photo-generated electrons/holes through ZnS passivation layer overlaying on TiO2/CdS. Photocurrent response (i-t), photocurrent density-voltage (J-V) curves of TiO2/CdS/ZnS demonstrated the photovoltaic conversion efficiency (η) has been reaching 3.43%, which has 230% and 33% improvement than pure TiO2and TiO2/CdS.
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