Multifunctional perovskite capping layers in hybrid solar cells

doi:10.1039/c4ta02921f

CORC > 化学研究所 > 中国科学院化学研究所

	Multifunctional perovskite capping layers in hybrid solar cells
	Li, Nan 1; Dong, Haopeng 1; Dong, Hua 2; Li, Jiaoli 3; Li, Wenzhe 1; Niu, Guangda 1; Guo, Xudong 1; Wu, Zhaoxin 2; Wang, Liduo 1
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2014-09-28
卷号	2 期号:36 页码:14973-14978
ISSN号	2050-7488
DOI	10.1039/c4ta02921f
英文摘要	In this study, the crucial role of perovskites capping layers in the TiO2/CH3NH3PbI3 hybrid solar cells is investigated. The capping layers are realized by controlling the concentration of PbI2 solutions in the sequential deposition process. The morphologies of the active layers are studied by high-resolution scanning electron microscopy (HR-SEM). The amount of perovskites in capping layers increases with the concentration of PbI2 solution, and the coverage of perovskite capping layers on TiO2 films is better developed. Except for the correlation between photocurrents and coverages of perovskite proposed by Snaith, we revealed a more detailed relationship between the photovoltaic performances and perovskite capping layers. It is noteworthy that UV-vis absorption increased with perovskites in capping layers. Moreover, according to the diffuse reflection spectra, light scattering, which is beneficial for the conversion efficiency of photons to electrons by directly preventing most of the incident light from transmitting out, is also enhanced due to both the emergence of larger-size particles in the capping layers and the higher effective dielectric coefficient. All of the aforementioned aspects result in high photocurrents up to 20.6 mA cm(-2). Efficiency as high as 10.3% is ultimately achieved by a simple control of PbI2 concentration in the sequential deposition process.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000340781400026
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52047]
专题	中国科学院化学研究所
通讯作者	Wang, Liduo
作者单位	1.Tsinghua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Beijing 100084, Peoples R China 2.Xi An Jiao Tong Univ, Dept Elect Sci & Technol, Sch Elect & Informat Engn, Key Lab Photon Technol Informat, Xian 710049, Peoples R China 3.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Nan,Dong, Haopeng,Dong, Hua,et al. Multifunctional perovskite capping layers in hybrid solar cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(36):14973-14978.
APA	Li, Nan.,Dong, Haopeng.,Dong, Hua.,Li, Jiaoli.,Li, Wenzhe.,...&Wang, Liduo.(2014).Multifunctional perovskite capping layers in hybrid solar cells.JOURNAL OF MATERIALS CHEMISTRY A,2(36),14973-14978.
MLA	Li, Nan,et al."Multifunctional perovskite capping layers in hybrid solar cells".JOURNAL OF MATERIALS CHEMISTRY A 2.36(2014):14973-14978.