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Nano Research 2022, 15(7): 6121-6127 https://doi.org/10.1007/s12274-022-4195-8
Research Article | Issue | Published: 19 March 2022

Perovskite bridging PbS quantum dot/polymer interface enables efficient solar cells

Show Author's Information Xing Meng1,§,  Yifan Chen1,§,  Fan Yang1,  Jieqi Zhang3,  Guozheng Shi1,  Yannan Zhang1,  Haodong Tang4,  Wei Chen4,  Yang Liu1,  Lin Yuan1,  Shaojuan Li2,  Kai Wang4,  Qi Chen3,  Zeke Liu1,2( ),  Wanli Ma1( )
Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
State Key Laboratory of Applied Optics, Changchun Institute of Optics Fine Mechanics and Physics, Changchun 130033, China
i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Suzhou 215123, China
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China

§ Xing Meng and Yifan Chen contributed equally to this work.

Keywords:
perovskite, solar cells, lead sulfide quantum dot, energy level alignment
Topics:
Energy
Cite this article:
Meng X, Chen Y, Yang F, et al. Perovskite bridging PbS quantum dot/polymer interface enables efficient solar cells. Nano Research, 2022, 15(7): 6121-6127. https://doi.org/10.1007/s12274-022-4195-8
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Abstract Full text Electronic supplementary material About this article

Conjugated polymers have been explored as promising hole-transporting layer (HTL) in lead sulfide (PbS) quantum dot (QD) solar cells. The fine regulation of the inorganic/organic interface is pivotal to realize high device performance. In this work, we propose using CsPbI3 QDs as the interfacial layer between PbS QD active layer and organic polymer HTL. The relative soft perovskite can mediate the interface and form favorable energy level alignment, improving charge extraction and reducing interfacial charge recombination. As a result, the photovoltaic performance can be efficiently improved from 10.50% to 12.32%. This work may provide new guidelines to the device structural design of QD optoelectronics by integrating different solution-processed semiconductors.


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Electronic supplementary material
About this article

Perovskite bridging PbS quantum dot/polymer interface enables efficient solar cells

Show Author's information Xing Meng1,§, Yifan Chen1,§, Fan Yang1, Jieqi Zhang3, Guozheng Shi1, Yannan Zhang1, Haodong Tang4, Wei Chen4, Yang Liu1, Lin Yuan1, Shaojuan Li2, Kai Wang4, Qi Chen3, Zeke Liu1,2( ), Wanli Ma1( )
Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
State Key Laboratory of Applied Optics, Changchun Institute of Optics Fine Mechanics and Physics, Changchun 130033, China
i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Suzhou 215123, China
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China

§ Xing Meng and Yifan Chen contributed equally to this work.

Abstract

Conjugated polymers have been explored as promising hole-transporting layer (HTL) in lead sulfide (PbS) quantum dot (QD) solar cells. The fine regulation of the inorganic/organic interface is pivotal to realize high device performance. In this work, we propose using CsPbI3 QDs as the interfacial layer between PbS QD active layer and organic polymer HTL. The relative soft perovskite can mediate the interface and form favorable energy level alignment, improving charge extraction and reducing interfacial charge recombination. As a result, the photovoltaic performance can be efficiently improved from 10.50% to 12.32%. This work may provide new guidelines to the device structural design of QD optoelectronics by integrating different solution-processed semiconductors.

Keywords: perovskite, solar cells, lead sulfide quantum dot, energy level alignment

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Publication history
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Acknowledgements

Publication history

Received: 19 December 2021
Revised: 17 January 2022
Accepted: 24 January 2022
Published: 19 March 2022
Issue date: July 2022

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 92163114, 22161142003, 52002260, 62022081, and 61974099), the Natural Science Foundation of Jiangsu Province of China (No. BK20200872), the State Key Laboratory of applied optics (No. SKLAO2020001A03), and Postdoctoral Science Foundation of China (No. 2021M702415). This work is also supported by Suzhou Key Laboratory of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science & Technology, the 111 Project, and Joint International Research Laboratory of Carbon-Based Functional Materials and Devices. K. W. acknowledges the funding support from National Key Research and Development Program (No. 2017YFE0120400) and National Natural Science Foundation of China (No. 61875082).

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