Hole-transporting layer based on a conjugated polyelectrolyte with organic cations enables efficient inverted perovskite solar cells

Zhang, Luozheng; Zhou, Xianyong; Zhong, Xiongwei; Cheng, Chun; Tian, Yanqing; Xu, Baomin

2019-03

10.1016/j.nanoen.2018.12.033

Nano Energy   影响因子和分区

2211-2855

2211-3282

Conjugated polyelectrolytes (CPEs) have been successfully applied in organic photovoltaics and organic light-emitting diodes, and recently those with inorganic cations became to serve as a hole-transporting layer (HTL) in inverted perovskite solar cells (iPSCs), whereas the CPE HTL materials with organic cations are really limited. In this work, we design a CPE whose side-chains are end-capped by CH3NH3+ cations, the same cations as that in the perovskite layer. The CPE is found to be more compatible to the perovskite material, and shows stronger abilities to reduce the traps both at the surface and in the bulk of the perovskite layer, compared with the typical poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS). The resulting iPSC presents much improved photovoltaic properties and a better long-term stability, with a power conversion efficiency of 19.76%, which is the highest value ever reported for iPSCs based on CPE HTLs.

Conjugated polyelectrolytes Organic cations Hole-transporting layers Inverted perovskite solar cells Defect passivation

SCI ; EI

英语

第一 ; 通讯

Fundamental Research (Discipline Arrangement) Project funding from Shenzhen Science and Technology Innovation Committee[JCYJ20170412154554048]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000458419000025

ELSEVIER SCIENCE BV

20185206296894

Conducting polymers ; Hole mobility ; Organic light emitting diodes (OLED) ; Perovskite ; Polyelectrolytes ; Positive ions ; Solar cells ; Solar power generation

Minerals:482.2 ; Solar Power:615.2 ; Solar Cells:702.3 ; Conducting Materials:708.2 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Organic Polymers:815.1.1

Web of Science

Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Zhang, Luozheng,Zhou, Xianyong,Zhong, Xiongwei,et al. Hole-transporting layer based on a conjugated polyelectrolyte with organic cations enables efficient inverted perovskite solar cells[J]. Nano Energy,2019,57:248-255.

Zhang, Luozheng,Zhou, Xianyong,Zhong, Xiongwei,Cheng, Chun,Tian, Yanqing,&Xu, Baomin.(2019).Hole-transporting layer based on a conjugated polyelectrolyte with organic cations enables efficient inverted perovskite solar cells.Nano Energy,57,248-255.

Zhang, Luozheng,et al."Hole-transporting layer based on a conjugated polyelectrolyte with organic cations enables efficient inverted perovskite solar cells".Nano Energy 57(2019):248-255.