[1]李启华,邓立波,张培新.钙钛矿太阳能电池二氧化锡电子传输层的优化[J].深圳大学学报理工版,2019,36(4):392-397.[doi:10.3724/SP.J.1249.2019.04392]
　LI Qihua,DENG Libo,and ZHANG Peixin.Optimization of tin oxide-based electron transport layer for perovskite solar cells[J].Journal of Shenzhen University Science and Engineering,2019,36(4):392-397.[doi:10.3724/SP.J.1249.2019.04392]
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钙钛矿太阳能电池二氧化锡电子传输层的优化()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第36卷
期数:
2019年第4期
页码:
392-397
栏目:
【材料科学】
出版日期:
2019-07-10

文章信息/Info

Title:
Optimization of tin oxide-based electron transport layer for perovskite solar cells
作者:
李启华1; 邓立波1; 张培新1; 2
1）深圳大学化学与环境工程学院，广东深圳 518060；2）广东省柔性可穿戴能源与器件工程技术研究中心，广东深圳 518060
Author(s):
LI Qihua1;  DENG Libo2;  and ZHANG Peixin1; 2
1) College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China 2) Guangdong Flexible Wearable Energy and Tools Engineering Technology Research Centre, Shenzhen 518060, Guangdong Province, P.R.China
关键词:
纳米材料; 太阳能电池; 钙钛矿; 二氧化锡; 低温法; 电子传输层
Keywords:
nanomaterials;  solar cells;  perovskite;  tin oxide (SnO2);  low-temperature;  electron transporting layer
分类号:
O649
DOI:
10.3724/SP.J.1249.2019.04392
文献标志码:
A
摘要:
电子传输层是钙钛矿太阳能电池的关键材料，其中，二氧化锡（SnO2）被认为是一种理想的电子传输材料．目前采用的溶胶-凝胶法低温制备的SnO2电子传输层结晶性差，电子传输性能低．通过以水作为SnO2溶胶-凝胶前驱液添加剂提高所制备的SnO2结晶性，最终可提高太阳能电池效率．采用溶胶-凝胶法制备了SnO2电子传输层，优化了其制备条件．研究发现，以适量的水作为SnO2溶胶-凝胶的溶剂添加剂，在80 ℃下配制SnO2溶胶-凝胶旋涂液并陈化24 h，有利于锡源SnCl2水解，促进SnO2生成和结晶性提高．最后，利用旋涂退火制备了SnO2电子传输层薄膜．随着水添加量增加，所制备的SnO2的结晶性和电子传输性能逐渐提高．当水添加量为150 μL时，可获得平整致密的SnO2薄膜，所制SnO2的结晶性和电子传输性能都有所提高，短路电流密度达到22.77 mA/cm2，开路电压达到1.037 V，填充因子为0.492，光电转换效率达到11.617%．水添加量增至300 μL时，会导致制备的SnO2薄膜缺陷增多，效率降低.
Abstract:
The electron transport layer is the key material in perovskite solar cells (PSCs), and tin oxide (SnO2) has been considered as an ideal electron transport material.The SnO2 prepared by the low temperature sol-gel method suffers from low crystallinity and poor electron transport properties. In this paper, the crystallinity of SnO2 was increased by adding water as solvent addictive to sol-gel precursor, which finally increased the efficiency of solar cells. SnO2-based electron transport layer was prepared through a sol-gel method and the preparation conditions were optimized. It was found that adding proper amount of water as the solvent addictive to prepare SnO2 sol-gel under 80 ℃ for 24 h benefits the hydrolysis of SnCl2, enhancing the reaction and crystallinity of SnO2. Finally, the SnO2 film was prepared via spin-coating annealing method. With the increase of water, both the crystallinity and electron transport properties were enhanced. When 150 μL of water was added, the obtained SnO2 layer was compact and smooth.The short-cut circuit current was 22.77 mA/cm2, the open circuit voltage was 1.037 V, the filling factor was 0.492 and the photo-electron conversion efficiency was 11.617%.However, excessive water addictive leads to more defects in the prepared SnO2 films and finally leads to the decrement of efficiency.

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更新日期/Last Update: 2019-07-04