在纳晶薄膜上原位生长铜锌锡硫量子点的研究  

Study on In-Situ Growth of Cu-Zn-Sn-S Quantum Dots on Nanocrystalline Thin Films

作　　者：康嘉懿 杨蒙 李雨珊 张敬波 KANG Jia-yi;YANG Meng;LI Yu-shan;ZHANG Jing-bo(College of Chemistry,Tianjin Normal University,Tianjin 300387,China;Tianjin Key Laboratory of Structure and Performance for Functional Molecules,Tianjin Normal University,Tianjin 300387,China)

机构地区：[1]天津师范大学化学学院,天津300387 [2]天津师范大学,天津市功能分子结构与性能重点实验室,天津300387

出　　处：《唐山师范学院学报》2023年第6期10-15,共6页Journal of Tangshan Normal University

基　　金：国家自然科学基金资助项目(21975183);天津市大学生创新创业训练计划项目资助(202210065025)。

摘　　要：采用连续离子层吸附反应法在TiO_(2)纳晶薄膜上直接生长铜锌锡硫量子点,进一步组装“三明治”结构的铜锌锡硫量子点敏化太阳能电池,研究连续离子层吸附反应沉积次数对量子点沉积的影响。通过透射电子显微镜、X射线衍射、拉曼光谱、X射线光电子能谱、电化学阻抗谱和光电流-电压曲线等测试对铜锌锡硫量子点的微观形貌、晶体结构、元素组成和光电性能进行了分析。结果表明,最佳连续离子层吸附反应法循环沉积次数为5次,在最佳条件下,所得到的铜锌锡硫量子点晶粒尺寸均匀、大小适宜,能有效减少载流子复合,有利于电荷传输,提高铜锌锡硫量子点敏化太阳能电池的光电转换效率。The successive ion layer adsorption reaction method was employed to grow Cu-Zn-Sn-S(CZTS)quantum dots directly on nanocrystalline TiO_(2) thin films.Further,a“sandwich”structure CZTS quantum dots sensitized solar cell was fabricated.The effect of repeating times of SILAR on deposition of quantum dots was studied.the morphologies,crystal structure,elemental composition and photoelectric properties of CZTS quantum dots were analyzed through transmission electron microscopy,X-ray diffraction,Raman spectra,XPS spectroscopy,electrochemical impedance spectroscopy and photocurrent-voltage curves.The results show that the optimal cycle deposition times of SILAR is 5,and the pure phase quantum dots with uniform grain size are obtained,which can reduce carrier recombination,facilitate charge transfer and improve the photoelectric conversion efficiency of copper zinc tin sulfur quantum dots sensitized solar cells.

关 键 词：连续离子层吸附反应 铜锌锡硫量子点 量子点敏化太阳能电池 光电转换效率 

分 类 号：O646[理学—物理化学]