以ZnO纳米棒阵列为电子传输层的无空穴层有机-无机杂化钙钛矿太阳能电池  

Hole-transport-layer-free Organic-Inorganic Hybrid Perovskite Solar Cells with ZnO Nanorod Arrays as Electron Transport Layer

作　　者：甘一升 陈苗苗 王玉龙 万丽[1] 孔梦琴 胡航[1] 王世敏[1] GAN Yisheng;CHEN Miaomiao;WANG Yulong;WAN Li;KONG Mengqin;HU Hang;WANG Shimin(Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials of Ministry of Education, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062)

机构地区：[1]湖北大学材料科学与工程学院,功能材料绿色制备与应用教育部重点实验室,有机化工新材料湖北省协同创新中心,武汉430062

出　　处：《材料导报》2018年第23期4047-4050,4078,共5页Materials Reports

基　　金：国家自然科学基金(21402045,51572072);湖北省自然科学基金(2014CFB167);湖北省科技厅创新群体项目(2013CFA005);武汉市科技局关键技术攻关计划(2013010602010209).

摘　　要：近年来,有机-无机杂化钙钛矿太阳能电池(PSCs)发展迅速,其光电转化效率(PCE)已提升至23.3%,成为当今太阳能电池领域无可争议的研究焦点。研究发现,PSCs结构组成与性质对光电性能影响显著。其中,电子传输层的形貌结构不仅影响钙钛矿晶体的成长,同时也决定了电子扩散系数和电子寿命。本工作将ZnO纳米棒阵列(Nanorods array,NRAs)作为电子传输层,应用于无空穴传输层的基于碳对电极的杂化钙钛矿太阳能电池中。通过水热法制备了不同长度的ZnO NRAs,经测试发现,对应的钙钛矿电池的PCE随ZnO NRAs长度的增加呈先升高后下降的趋势,当ZnO NRAs长度为454nm时,PCE最优为6.18%。Organic-inorganic hybrid perovskite solar cells(PSCs)have recently undergone rapid progress,and since its invention,its photoelectric conversion efficiency(PCE)has been experiencing surprisingly swift and frequently record-breaking growth,and finally reached the present record23.3%.This makes PSCs an indisputable research hotspot in the field of solar cells.The structure and properties of PSCs have been found significant to the device performance.Moreover,the morphology of electron transport layer not only affects the morphology of perovskite,but also dominates the electron diffusion coefficient and electron lifetime.In this work,zinc oxide nanorod arrays(ZnO NRAs)were firstly applied as the electron transport layer in hole-transport-layer-free,carbon-counter electrode based perovskite solar cells,and in the meanwhile,its feasibility had been confirmed.A series of ZnO NRAs which differ in nanorod length were hydrothermally fabricated.The corresponding PCEs of the solar cells were determined to have a biphasic(increase→decrease)change with the increasing length of ZnO NRAs,and to reach the optimum alue(6.18%)when the length of ZnO NRAs was454nm.

关 键 词：无空穴传输层 钙钛矿太阳能电池 电子传输层 氧化锌纳米棒阵列 

分 类 号：TB34[一般工业技术—材料科学与工程] TM914.42[电气工程—电力电子与电力传动]