Pyrolysis preparation of Cu2ZnSnS4 thin film and its application to counter electrode in quantum dot-sensitized solar cells
Pyrolysis preparation of Cu2ZnSnS4 thin film and its application to counter electrode in quantum dot-sensitized solar cells
复制标题
Cu2ZnSnS4薄膜的热解制备及其在量子点敏化太阳能电池对电极中的应用
DOI：
10.1016/j.electacta.2013.11.168
复制
发表时间：
2014-02
影响因子：
6.6
通讯作者：
Jun Zhu
中科院分区：
文献类型：
--
作者：
Yanru Zhang;史成武;Xiaoyan Dai;Feng Liu;Xiaqin Fang;Jun Zhu
使用含有二水氯化铜（0.06 mol dm−3）、氯化锌（0.03 mol dm−3）、二水氯化亚锡（0.03 mol dm−3）的甲醇溶液，通过热解过程成功制备了具有均匀多孔表面特征、孔径为100-200 nm的Cu2ZnSnS4（CZTS）薄膜。 硫脲 (0.48 mol dm−3) 和去离子水 (1.92 mol dm−3) 作为前体溶液，温度为 380°C，空气气氛中。采用电化学阻抗谱评估了热解CZTS薄膜对Sn2-/S2−氧化还原电对的电化学催化活性，通过重复将FTO基板浸入前驱体溶液中并在380°C下加热7个循环而获得的热解CZTS薄膜的电荷转移电阻为64.08Ω。组装的量子点敏化太阳能电池的开路光电压为0.52 V，短路光电流密度为12.96 mA cm−2，填充因子为0.38，光电转换效率为2.56%。由于热解过程简便、成本低、无真空，并且具有获得各种多孔微结构薄膜并允许大面积沉积的优点，因此热解CZTS薄膜可以作为QDSC的有效对电极。
The Cu2ZnSnS4(CZTS) thin films with uniform and porous surface feature with the pore size of 100-200 nm were successfully prepared by pyrolysis procedure using the methanol solution containing copper chloride dihydrate (0.06 mol dm−3), zinc chloride (0.03 mol dm−3), stannous chloride dihydrate (0.03 mol dm−3), thiourea (0.48 mol dm−3) and deionized water (1.92 mol dm−3) as precursor solution at 380°C in air atmosphere. Electrochemical impedance spectroscopy was applied to evaluate the electrochemical catalytic activity of the pyrolysis CZTS thin films for redox couple of Sn2-/S2−and the charge transfer resistance was 64.08 Ω using the pyrolysis CZTS thin film obtained by repeating the procedure of dipping the FTO substrate into the precursor solution and heating at 380°C for 7 cycles. The assembled quantum dot-sensitized solar cells gave an open-circuit photovoltage of 0.52 V, a short-circuit photocurrent density of 12.96 mA cm−2, and a fill factor of 0.38, corresponding to the photoelectric conversion efficiency of 2.56%. Because the pyrolysis procedure was a facile, low cost and vacuum-free process, and had the advantage of obtaining various porous microstructure thin films and allowing deposition over large areas, the pyrolysis CZTS thin films can serve as an effective counter electrode for QDSCs.
登录
查看更多内容
影响因子：
6.9
作者：
Shi Cheng-wu;Dai Song-Yuan;Wang Kong-Jia;Pan Xu;Guo Li;Zeng Long-yue;Hu Lin-hua;Kong Fan-tai
通讯作者：
Shi Cheng-wu;Dai Song-Yuan;Wang Kong-Jia;Pan Xu;Guo Li;Zeng Long-yue;Hu Lin-hua;Kong Fan-tai
影响因子：
17.1
作者：
Gonzalez-Pedro, Victoria;Xu, Xueqing;Bisquert, Juan
通讯作者：
Bisquert, Juan
影响因子：
6.6
作者：
Chengwu Shi;Songyuan Dai;Kongjia Wang;Xu Pan;Longyue Zeng;Linhua Hu;F. Kong;Li Guo
通讯作者：
Chengwu Shi;Songyuan Dai;Kongjia Wang;Xu Pan;Longyue Zeng;Linhua Hu;F. Kong;Li Guo
影响因子：
6.6
作者：
Tawanda Mugadza;Yasin Arslanoğlu;T. Nyokong
通讯作者：
Tawanda Mugadza;Yasin Arslanoğlu;T. Nyokong
影响因子：
5.7
作者：
Radich, James G.;Dwyer, Ryan;Kamat, Prashant V.
通讯作者：
Kamat, Prashant V.