简易溶液法快速制备Cu_2ZnSnS_4纳米晶工艺研究  

Study on the Rapid Synthesis of Cu_2ZnSnS_4 Nanocrystals by a Facile Solution Route

作　　者：陈进[1] 陈勤妙[1] 王婷婷[1] 贾震[1] 周芳芳[1] 窦晓鸣[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,教育部光学仪器与系统工程研究中心,上海市现代光学系统重点实验室,上海200093

出　　处：《人工晶体学报》2014年第10期2664-2670,2676,共8页Journal of Synthetic Crystals

基　　金：上海市科委基础研究领域重点项目(13JC1404300);上海市科技发展基金(10540500700);上海高校青年教师培养资助计划(ZZSLG13013);上海理工大学教师创新能力建设(GDCX-Y-1205);国家自然科学基金(21205078);高等学校博士学科点专项科研基金博导类资助课题(20123120110002);上海市教委科研创新项目(13YZ073);上海市研究生创新基金(JWCXSL1301);上海市重点学科项目第三期项目(S30502)

摘　　要：采用一种简易溶液法成功快速制备出低成本薄膜太阳能电池用Cu2ZnSnS4（CZTS）纳米晶。探讨合成温度和时间对CZTS纳米晶的结构、形貌、元素比例及光学特性的影响,实现可控的CZTS纳米晶合成。以上特性分别采用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、能量色散谱仪（EDX）、紫外-可见光谱仪（UV-vis）进行表征。结果表明：温度为250℃,时间为1 h时可获得锌黄锡矿结构,团聚颗粒约为200-500 nm,化学计量比约为Cu∶Zn∶Sn∶S=2.17∶1∶1.23∶4.69,禁带宽度为1.5 eV的纳米晶,适合印刷法制备CZTS薄膜太阳能电池吸收层。Cu2ZnSnS4（ CZTS） nanocrystals for low cost thin film solar cell,were synthesized rapidly and successfully by a facile solution route. The influences of the synthesis temperature and time on the structure,morphology,chemical composition and optical properties were investigated by XRD,SEM,EDX and UV-vis Spectrometer,respectively. The results show that when the reaction temperature was250 ℃ and reaction time was 1 h,the as-synthesized CZTS nanocrystals were kesterite-type; the size range of the aggregation nanoparticles was from 200 nm to 500 nm; the compositional ration of the CZTS nanocrystals were Cu∶ Zn∶ Sn∶ S = 2. 17∶ 1∶ 1. 23∶ 4. 69; the band gap was 1. 5 eV. All results suggested that the as-synthesized CZTS nanocrystals were suitable for the fabrication of the absorption layer of thin film solar cell by the printing method..

关 键 词：简易溶液法 Cu2ZnSnS4纳米晶 印刷法 

分 类 号：O649[理学—物理化学] O614[理学—化学]