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	Pbtio3 as electron-selective layer for high-efficiency perovskite solar cells: enhanced electron extraction via tunable ferroelectric polarization
	Wang, Ming-Zi1; Feng, Hong-Jian1; Qian, Chong-Xin1; He, Jiawei1; Feng, Jiangshan2; Cao, Yong-Hua; Yang, Kang; Deng, Zun-Yi; Yang, Zhou2; Yao, Xi3
刊名	Advanced functional materials
	2019-01-04
卷号	29期号:1页码:9
关键词	Electron-selective layers Ferroelectric tuning Pbtio3 Perovskite solar cells
ISSN号	1616-301X
DOI	10.1002/adfm.201806427
通讯作者	Feng, hong-jian(hjfeng@nwu.edu.cn) ; Liu, shengzhong (frank)(liusz@snnu.edu.cn) ; Zeng, xiao cheng(xzeng1@unl.edu)
英文摘要	Pbtio3 (pto) is explored as a versatile and tunable electron-selective layer (esl) for perovskite solar cells. to demonstrate effectiveness of pto for electron-hole separation and charge transfer, perovskite solar cells are designed and fabricated in the laboratory with the pto as the esl. the cells achieve a power conversion efficiency (pce) of approximate to 12.28% upon preliminary optimization. it is found that the pto ferroelectric layer can not only increase the pce, but also tune the photocurrent via tuning pto's ferroelectric polarization. moreover, to understand the physical mechanism underlying the carrier transport by the ferroelectric polarization, the electronic structure of pto/ch3nh3pbi3 heterostructure is computed using the first-principles methods, for which the triplet state is used to simulate charge transfer in the heterostructure. it is shown that the synergistic effect of type ii band alignment and the specific ferroelectric polarization direction provide the effective extraction of electrons from the light absorber, while minimize recombination of photogenerated electron-hole pairs. overall, the ferroelectric pto is a promising and tunable esl for optimizing electron transport in the perovskite solar cells. the design offers a different strategy for altering direction of carrier transport in solar cells.
WOS关键词	TIO2 ; HETEROJUNCTION ; 1ST-PRINCIPLES ; PERFORMANCE ; STABILITY
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000454703900021
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2372922
专题	大连化学物理研究所
通讯作者	Feng, Hong-Jian; Liu, Shengzhong (Frank); Zeng, Xiao Cheng
作者单位	1.Northwest Univ, Sch Phys, Xian 710069, Peoples R China 2.Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Shaanxi Engn Lab Adv Energy Technol, Natl Minist Educ,Sch Mat Sci & Engn, Xian 710119, Shaanxi, Peoples R China 3.Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Shaanxi, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 5.Univ Nebraska Lincoln, Dept Chem, Lincoln, NE 68588 USA
推荐引用方式 GB/T 7714	Wang, Ming-Zi,Feng, Hong-Jian,Qian, Chong-Xin,et al. Pbtio3 as electron-selective layer for high-efficiency perovskite solar cells: enhanced electron extraction via tunable ferroelectric polarization[J]. Advanced functional materials,2019,29(1):9.
APA	Wang, Ming-Zi.,Feng, Hong-Jian.,Qian, Chong-Xin.,He, Jiawei.,Feng, Jiangshan.,...&Zeng, Xiao Cheng.(2019).Pbtio3 as electron-selective layer for high-efficiency perovskite solar cells: enhanced electron extraction via tunable ferroelectric polarization.Advanced functional materials,29(1),9.
MLA	Wang, Ming-Zi,et al."Pbtio3 as electron-selective layer for high-efficiency perovskite solar cells: enhanced electron extraction via tunable ferroelectric polarization".Advanced functional materials 29.1(2019):9.

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