ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells

Bo-Wen Liu; Ze-Rui Li; Ling-Peng Yan; Jing-Bo Guo; Qun Luo; Chang-Qi Ma

doi:10.1007/s10118-022-2819-9

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ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells

RESEARCH ARTICLE | Updated：2022-11-16

- ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells
- Chinese Journal of Polymer Science Vol. 40, Issue 12, Pages: 1594-1603(2022)
- Affiliations：
  
  a.School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
  b.i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
- Author bio：
  
  cqma2011@sinano.ac.cn
- Funds：
- DOI：10.1007/s10118-022-2819-9
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Bo-Wen Liu, Ze-Rui Li, Ling-Peng Yan, et al. ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells. [J]. Chinese Journal of Polymer Science 40(12):1594-1603(2022)
DOI：

Bo-Wen Liu, Ze-Rui Li, Ling-Peng Yan, et al. ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells. [J]. Chinese Journal of Polymer Science 40(12):1594-1603(2022) DOI： 10.1007/s10118-022-2819-9.

摘要

ZnO Surface Passivation with Glucose Enables Simultaneously Improving Efficiency and Stability of Inverted Polymer: Non-fullerene Solar Cells

Abstract

The power conversion efficiency (PCE) of polymer solar cells (PSCs) has exceeded 19% due to the rapid progress of photoactive organic materials, including conjugated polymer donors and the matched non-fullerene acceptors (NFAs). Due to the high density of oxygen vacancies and the consequent photocatalytic reactivity of ZnO, structure inverted polymer solar cells with the ZnO electron transport layer (ETL) usually suffer poor device photostability. In this work, the eco-friendly glucose (Glu) is found to simultaneously improve the efficiency and stability of polymer:NFA solar cells. Under the optimal conditions, we achieved improved PCEs from 14.77% to 15.86% for the PM6:Y6 solar cells. Such a PCE improvement was attributed to the improvement in ,J,SC, and FF, which is ascribed to the smoother and more hydrophobic surface of the ZnO/Glu surface, thereby enhancing the charge extraction efficiency and inhibiting charge recombination. Besides, UV-Vis absorption spectra analysis revealed that glucose modification could significantly inhibit the photodegradation of Y6, resulting in a significant improvement in the stability of the device with 92% of its initial PCE after aging for 1250 h. The application of natural interface materials in this work brings hope for the commercial application of organic solar cells and provides new ideas for developing new interface materials.

关键词

Keywords

Polymer solar cellsGlucoseSurface passivationCharge injectionStability improvement

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