Efficient All-Polymer Solar Cells with Sequentially Processed Active Layers

Chaoyue Zhao; Hui Huang; Lihong Wang; Guoping Zhang; Guanyu Lu; Han Yu; Guanghao Lu; Yulai Han; Mingxia Qiu; Shunpu Li; Guangye Zhang

doi:10.3390/polym14102058

Polymers (May 2022)

Efficient All-Polymer Solar Cells with Sequentially Processed Active Layers

Chaoyue Zhao,
Hui Huang,
Lihong Wang,
Guoping Zhang,
Guanyu Lu,
Han Yu,
Guanghao Lu,
Yulai Han,
Mingxia Qiu,
Shunpu Li,
Guangye Zhang

Affiliations

Chaoyue Zhao: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Hui Huang: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Lihong Wang: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Guoping Zhang: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Guanyu Lu: Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
Han Yu: Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong 999077, China
Guanghao Lu: Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
Yulai Han: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Mingxia Qiu: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Shunpu Li: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China
Guangye Zhang: College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China

DOI: https://doi.org/10.3390/polym14102058
Journal volume & issue: Vol. 14, no. 10
p. 2058

Abstract

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In this work, we apply the sequential processing (SqP) method to address the relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on the polymerized small-molecule acceptor (PSMA). Compared to the blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via the SqP method show boosted electron mobility and a more balanced charge carrier transport, which increases the FF of the SqP device and compensates for the short-circuit current loss, rendering comparable overall performance with the BC device. Through film-depth-dependent light absorption spectroscopy, we analyze the sub-layer absorption and exciton generation rate in the vertical direction of the device, and discuss the effect of the increased electron mobility on device performance, accordingly.

Published in Polymers

ISSN: 2073-4360 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/polymers/

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