High-performance Layer-by-Layer Processed Polymer Solar Cell <italic style="font-style: italic">via</italic> Solid Additive of Thermally-activated Delay Fluorescence

Meng-Ting Wang; Yi-Ming Wang; Fu-Gui Cai; Yi-Mei Zhang; Hong-Zheng Chen; Li-Jian Zuo

doi:10.1007/s10118-026-3653-2

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High-performance Layer-by-Layer Processed Polymer Solar Cell via Solid Additive of Thermally-activated Delay Fluorescence

RAPID COMMUNICATION | Updated：2026-07-10

- High-performance Layer-by-Layer Processed Polymer Solar Cell via Solid Additive of Thermally-activated Delay Fluorescence
- Chinese Journal of Polymer Science Vol. 44, Issue 8, Pages: 2403-2411(2026)
- Affiliations：
  
  a.State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  b.Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 310014, China
- Author bio：
  
  zjuzlj@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-026-3653-2
  CLC：
- Received：18 January 2026，
  
  Revised：2026-02-13，
  
  Accepted：10 March 2026，
  
  Online First：09 July 2026，
  
  Published：15 August 2026
- Accepted：
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Wang, M. T.; Wang, Y. M.; Cai, F. G.; Zhang, Y. M.; Chen, H. Z.; Zuo, L. J. High-performance layer-by-layer processed polymer solar cell via solid additive of thermally-activated delay fluorescence. Chinese J. Polym. Sci. 2026, 44, 2403–2411

Meng-Ting Wang, Yi-Ming Wang, Fu-Gui Cai, et al. High-performance Layer-by-Layer Processed Polymer Solar Cell via Solid Additive of Thermally-activated Delay Fluorescence[J]. Chinese Journal of Polymer Science, 2026, 44(8): 2403-2411. DOI: 10.1007/s10118-026-3653-2.
Wang, M. T.; Wang, Y. M.; Cai, F. G.; Zhang, Y. M.; Chen, H. Z.; Zuo, L. J. High-performance layer-by-layer processed polymer solar cell via solid additive of thermally-activated delay fluorescence. Chinese J. Polym. Sci. 2026, 44, 2403–2411 DOI： 10.1007/s10118-026-3653-2.

Meng-Ting Wang, Yi-Ming Wang, Fu-Gui Cai, et al. High-performance Layer-by-Layer Processed Polymer Solar Cell via Solid Additive of Thermally-activated Delay Fluorescence[J]. Chinese Journal of Polymer Science, 2026, 44(8): 2403-2411. DOI: 10.1007/s10118-026-3653-2. DOI：

摘要

Incorporating a thermally activated delayed fluorescence (TADF) additive into layer-by-layer fabrication synergistically optimizes the active layer morphology and suppresses non-radiative losses in polymer solar cells

enabling enhanced charge transport and exciton dynamics

as well as a power conversion efficiency of over 20%.

Abstract

Simultaneously optimizing the optoelectronic properties and the morphology of active layer is the key to high-performance polymer solar cells. Here

we present a novel materials-processing paradigm that incorporates a thermally activated delayed fluorescence (TADF) additive into the layer-by-layer (LBL) fabrication process to concurrently optimize nanoscale morphology and mitigate non-radiative recombination. We demonstrate that the TADF additive facilitates the formation of an ideal interpenetrating network during LBL film deposition

while its intrinsic TADF properties effectively reduce non-radiative voltage loss

enhance exciton lifetimes

and facilitate charge generation and transport. Devices fabricated with this synergistic strategy achieve both high short-circuit current density and open-circuit voltage

culminating in a remarkable power conversion efficiency exceeding 20%. This work not only provides an efficient and reproducible processing route for high-performance polymer solar cells (PSCs) but also opens a new avenue for addressing fundamental optoelectronic limitations through coordinated material design and processing innovation.

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High-performance Layer-by-Layer Processed Polymer Solar Cell via Solid Additive of Thermally-activated Delay Fluorescence

DOI：10.1007/s10118-026-3653-2

摘要

Abstract

关键词

Keywords

references