摘要
采用溶胶-凝胶法在玻璃衬底上制备Cu_(2)ZnSnS_(4)薄膜材料,通过调节前驱体溶液的pH值,研究pH值对Cu_(2)ZnSnS_(4)薄膜材料光电性能的影响。采用扫描电镜观测样品表面形貌,采用紫外可见光分光光度计、霍尔效应测试系统测试样品光电性能。结果表明:前驱体溶液pH值为4.5时,制备的Cu_(2)ZnSnS_(4)薄膜颗粒较为均匀,结晶质量较好。此时,Cu_(2)ZnSnS_(4)薄膜吸光度最强,为5.5 A;霍尔电压值最大,为18.3 mV。前驱体溶液pH值调到碱性范围时体系中OH-增多,易生成Cu(OH)2等难溶性物质,且薄膜表面团簇增多并伴有堆叠生长。前驱体溶液pH值调到酸性范围时有利于结晶,Cu_(2)ZnSnS_(4)薄膜体系缺陷减少、空位少,有利于提高电学性能。
The sol-gel method was used to prepare Cu_(2)ZnSnS_(4) thin film materials on a glass substrate.By adjusting the pH value of the precursor solution,the influence of pH value on the optical and electrical properties of Cu_(2)ZnSnS_(4) thin film materials was studied.The surface morphology of the sample was observed with a scanning electron microscope,and the photoelectric properties of the sample were tested with an ultraviolet-visible spectrophotometer and a Hall effect test system.The results show that the Cu_(2)ZnSnS_(4) film particles prepared when the pH of the precursor solution is 4.5 are more uniform and the crystal quality is better.At this time,the absorbance of the Cu_(2)ZnSnS_(4) film is the strongest,5.5 A;the Hall voltage is the largest,18.3 mV.When the pH value of the precursor solution is adjusted to the alkaline range,the OH-in the system increases,and it is easy to produce insoluble substances such as Cu(OH)_(2),and the surface clusters of the film increase with stacking growth.When the pH value of the precursor solution is adjusted to the acidic range,it is beneficial to crystallization,and the Cu_(2)ZnSnS_(4) thin film system reduces defects and vacancies,which is beneficial to improve electrical performance.
作者
杨秀凡
张海玲
周丹彤
陈海波
YANG Xiufan;ZHANG Hailing;ZHOU Dantong;CHEN Haibo(College of Electronic Information Engineering,Anshun University,Anshun Guizhou 561000;College of Agricultural,Ans-hun University,Anshun Guizhou 561000)
出处
《河南科技》
2021年第35期110-113,共4页
Henan Science and Technology
基金
贵州省教育厅青年科技人才成长项目(黔教合KY字[2022]041)
贵州省教育厅青年科技人才成长项目(黔教合KY字[2022]040)。
