CaltechAUTHORS
  A Caltech Library Service

Modulate Molecular Interaction between Hole Extraction Polymers and Lead Ions toward Hysteresis-Free and Efficient Perovskite Solar Cells

Zhang, Zhongqiang and Fu, Weifei and Ding, Honghe and Ju, Huan-Xin and Yan, Kangrong and Zhang, Xinqian and Ding, Feizhi and Li, Chang-Zhi and Chen, Hongzheng (2018) Modulate Molecular Interaction between Hole Extraction Polymers and Lead Ions toward Hysteresis-Free and Efficient Perovskite Solar Cells. Advanced Materials Interfaces, 5 (15). Art. No. 1800090. ISSN 2196-7350. http://resolver.caltech.edu/CaltechAUTHORS:20180822-111321370

[img] PDF - Supplemental Material
See Usage Policy.

907Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20180822-111321370

Abstract

Herein three polymeric hole extraction materials (HEMs), poly(benzene‐dithiophene) (PB2T)‐O, PB2T‐S, and PB2T‐SO are presented for p–i–n perovskite solar cells (PVSCs). This study reveals that the perovskite device hysteresis and performance heavily rely on the perovskite grain boundary conditions. More specifically, they are predetermined through the molecular interaction between Lewis base atoms of HEMs and perovskites. It is revealed that only changing the side chain terminals (-OCH_3, -SCH_3, and –SOCH_3) of HEMs results in effective modulating PVSC performance and hysteresis, due to the effective tune of interaction strength between HEM and perovskite. With an in situ grown perovskite‐HEM bulk heterojunction structure, PB2T‐O with weak binding group (-OCH_3, −78.9 kcal mol^(−1) bonding energy) to lead ions allows delivering hysteresis‐free and efficient devices, which is sharp contrast to the strong binding PB2T‐SO (−119.3 kcal mol^(−1) bonding energy). Overall, this work provides new insights on PVSC hysteresis and the related curing methods via multifunctional HEM design in PVSCs.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1002/admi.201800090DOIArticle
ORCID:
AuthorORCID
Zhang, Zhongqiang0000-0002-1931-3213
Li, Chang-Zhi0000-0003-1968-2032
Chen, Hongzheng0000-0002-5922-9550
Additional Information:© 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. Issue Online: 09 August 2018; Version of Record online: 05 June 2018; Manuscript revised: 19 March 2018; Manuscript received: 18 January 2018. Funding Information: National Natural Science Foundation of China. Grant Numbers: 21674093, 51620105006, 21503203, 51473142 973 program. Grant Number: 2014CB643503. International Science and Technology Cooperation Program of China. Grant Number: 2016YFE0102900. National Key R&D program of China. Grant Number: 2017YFA0403403. Zhejiang Province Science and Technology Plan. Grant Number: 2018C01047. Zhejiang Natural Science Fund for Distinguished Young Scholars. Grant Number: LR17E030001. Young 1000 Talents Global Recruitment Program of China 100 Talents Program of Zhejiang University.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China21674093
National Natural Science Foundation of China51620105006
National Natural Science Foundation of China21503203
National Natural Science Foundation of China51473142
973 Program2014CB643503
International Science and Technology Cooperation Program of China2016YFE0102900
National Key Research and Development Program of China2017YFA0403403
Zhejiang Province Science and Technology Plan2018C01047
Zhejiang Natural Science Fund for Distinguished Young ScholarsLR17E030001
Young 1000 Talents Global Recruitment Program of ChinaUNSPECIFIED
Zhejiang UniversityUNSPECIFIED
Subject Keywords:hole extraction materials; hysteresis; molecular interaction; perovskite solar cells
Record Number:CaltechAUTHORS:20180822-111321370
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180822-111321370
Official Citation:Z. Zhang, W. Fu, H. Ding, H.‐X. Ju, K. Yan, X. Zhang, F. Ding, C.‐Z. Li, H. Chen, Adv. Mater. Interfaces 2018, 5, 1800090. https://doi.org/10.1002/admi.201800090
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89033
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Aug 2018 18:37
Last Modified:22 Aug 2018 18:37

Repository Staff Only: item control page