Volume 10, Issue 6 2200199

Research Article

A New Alcohol-Soluble Polymer PFN-ID as Cathode Interlayer to Optimize Performance of Conventional Polymer Solar Cells by Increasing Electron Mobility

Corresponding Author

Chunyan Yang

[email protected]

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Chunlin Zhang,

Corresponding Author

Chunlin Zhang

[email protected]

School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Can Chen,

Can Chen

School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Yi Ren,

Yi Ren

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Haojiang Shen,

Haojiang Shen

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Junfeng Tong,

Junfeng Tong

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Sanshan Du,

Sanshan Du

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Yangjun Xia,

Yangjun Xia

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Jianfeng Li,

Corresponding Author

Jianfeng Li

[email protected]

orcid.org/0000-0002-1361-4381

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Chunyan Yang,

Corresponding Author

Chunyan Yang

[email protected]

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Chunlin Zhang,

Corresponding Author

Chunlin Zhang

[email protected]

School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Can Chen,

Can Chen

School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Yi Ren,

Yi Ren

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Haojiang Shen,

Haojiang Shen

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Junfeng Tong,

Junfeng Tong

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Sanshan Du,

Sanshan Du

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Yangjun Xia,

Yangjun Xia

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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Jianfeng Li,

Corresponding Author

Jianfeng Li

[email protected]

orcid.org/0000-0002-1361-4381

Gansu Province Organic Semiconductor Materials and Technology Research Center, School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou, 730070 China

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First published: 07 April 2022

https://doi.org/10.1002/ente.202200199

Citations: 30

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Abstract

A new alcohol-soluble polymer PFN-ID is successfully synthesized by combining N,N-di(2-ethylhexyl)-6,6′-dibromoisoindigo and an amino-containing fluorene subunits, and applied to polymer solar cells (PSCs) with PTB7-Th:PC₇₁BM as an active layer. The n-type backbone of the PFN-ID improves electron transfer performance and thus optimizes device performance. The PSCs with PFN-ID as cathode interfacial layers (CILs) have significantly improved compared to the device without the interface layer, especially the optimum power conversion efficiency (PCE) of PSCs reaches up to 9.24%, which is 1.62 times higher than that of devices without CILs. The I–V curves show that the introduction of the n-type backbone leads to a significant increase in the conductivity of PFN-ID compared to PFN. The UV photoelectron spectroscopy and Mott–Schottky curves further confirm that PFN-ID can decrease the work function of Al electrode, and increase its built-in potential, giving higher open-circuit voltage. The resulting conventional PSCs using PFN-ID as cathode interlayer achieve high photovoltaic performance, and the research results can provide a new strategy for the advancement of PSCs.

Conflict of Interest

The authors declare no conflict of interest.

Open Research

Data Availability Statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

Supporting Information

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Volume10, Issue6

June 2022

2200199

A New Alcohol-Soluble Polymer PFN-ID as Cathode Interlayer to Optimize Performance of Conventional Polymer Solar Cells by Increasing Electron Mobility

Abstract

Conflict of Interest

Open Research

Data Availability Statement

Supporting Information

References

Citing Literature

References

Information

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A New Alcohol-Soluble Polymer PFN-ID as Cathode Interlayer to Optimize Performance of Conventional Polymer Solar Cells by Increasing Electron Mobility

Abstract

Conflict of Interest

Open Research

Data Availability Statement

Supporting Information

References

Citing Literature

References

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