Graphene oxide as an additive to improve perovskite film crystallization and morphology for high-efficiency solar cells
Zhang, XN; Ji, GW; Xiong, DB; Su, ZH; Zhao, B; Shen, KC; Yang, YG; Gao, XY
2018
发表期刊RSC ADVANCES
ISSN2046-2069
卷号8期号:2页码:987-993
文章类型期刊论文
摘要The quality of a perovskite film has a great impact on its light absorption and carrier transport, which is vital to improve high-efficiency perovskite solar cells (PSCs). Herein, it is demonstrated that graphene oxide (GO) can be used as an effective additive in the precursor solution for the preparation of high-quality solution-processed CH3NH3PbI3 (MAIPbI(3)) films. It is evidenced by scanning electron microscopy that the size of the grains inside these films not only increases but also becomes more uniform after the introduction of an optimized amount of 1 vol% GO. Moreover, 1 vol% GO also enhances the crystallization of perovskite film with intact preferential out-of-plane orientation as proven by 2-dimensional grazing-incidence X-ray diffraction. As a consequence of the improved film quality, enhanced charge extraction efficiency and optical absorption are demonstrated by photoluminescence (PL) spectroscopy and UV-visible absorption spectroscopy, respectively. Using 1 vol% GO, the fabricated champion heterojunction PSC with a structure of ITO/SnO2/perovskite/spiro-OMeTAD/Au shows a significant power conversion efficiency increase to 17.59% with reduced hysteresis from 16.10% for the champion device based on pristine perovskite. The present study thus proposes a simple approach to make use of GO as an effective and cheap addictive for high-performance PSCs with large-scale production capability.
关键词Quantum Dots Performance Layer Iodide Fabrication Deposition Growth Ch3nh3pbi3-xclx Sensitizers Extraction
DOI10.1039/c7ra12049d
收录类别SCI
语种英语
WOS记录号WOS:000419347900045
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29031
专题中科院上海应用物理研究所2011-2018年
作者单位1.Zhang, XN
2.Ji, GW
3.Xiong, DB
4.Su, ZH
5.Zhao, B
6.Shen, KC
7.Yang, YG
8.Gao, XY
推荐引用方式
GB/T 7714
Zhang, XN,Ji, GW,Xiong, DB,et al. Graphene oxide as an additive to improve perovskite film crystallization and morphology for high-efficiency solar cells[J]. RSC ADVANCES,2018,8(2):987-993.
APA Zhang, XN.,Ji, GW.,Xiong, DB.,Su, ZH.,Zhao, B.,...&Gao, XY.(2018).Graphene oxide as an additive to improve perovskite film crystallization and morphology for high-efficiency solar cells.RSC ADVANCES,8(2),987-993.
MLA Zhang, XN,et al."Graphene oxide as an additive to improve perovskite film crystallization and morphology for high-efficiency solar cells".RSC ADVANCES 8.2(2018):987-993.
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