Weak Absorptive Component Boosts Exciton Dissociation in Indoor Organic Photovoltaics

IF 5.5 1区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chinese Journal of Chemistry Pub Date : 2025-02-19 DOI:10.1002/cjoc.202401167

Zhenchuan Wen, Jiawei Qiao, Yuying Yang, Xiaotao Hao

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引用次数: 0

Abstract

Indoor organic photovoltaic (OPV) cells have emerged as promising candidates for harvesting energy from artificial light sources. However, the limited spectral range and low photon flux of indoor light sources restrict the photocurrent and power output of these devices. In this work, we investigate the role of a weak absorptive third component in enhancing exciton dissociation and improving indoor OPV performance. By introducing eC9-2Cl into a D18-Cl:F-BTA3 binary system, we create a ternary blend that demonstrates significant improvements in device efficiency. Transient absorption spectroscopy and time-resolved photoluminescence measurements reveal that eC9-2Cl facilitates efficient energy transfer and exciton dissociation. Under indoor lighting conditions, where eC9-2Cl acts as a weak absorptive third component, the ternary devices exhibit a power conversion efficiency increase from 24.7% to 26.2%. These findings highlight the potential of weak absorptive components in optimizing energy transfer processes and overcoming the limitations of indoor light harvesting in OPV systems.

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弱吸收成分促进室内有机光伏激子解离

室内有机光伏（OPV）电池已经成为从人造光源中收集能量的有希望的候选者。然而，室内光源有限的光谱范围和低光子通量限制了这些器件的光电流和功率输出。在这项工作中，我们研究了弱吸收第三组分在增强激子解离和改善室内OPV性能中的作用。通过将eC9-2Cl引入到D18-Cl:F-BTA3二元体系中，我们创建了一种三元混合物，该混合物显示出器件效率的显着提高。瞬态吸收光谱和时间分辨光致发光测量表明，eC9-2Cl促进了有效的能量转移和激子解离。在室内照明条件下，eC9-2Cl作为弱吸收第三组分，三元器件的功率转换效率从24.7%提高到26.2%。这些发现突出了弱吸收组分在优化能量传递过程和克服OPV系统室内光收集限制方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chinese Journal of Chemistry 化学-化学综合

CiteScore

8.80

自引率

14.80%

发文量

422

审稿时长

1.7 months

期刊介绍： The Chinese Journal of Chemistry is an international forum for peer-reviewed original research results in all fields of chemistry. Founded in 1983 under the name Acta Chimica Sinica English Edition and renamed in 1990 as Chinese Journal of Chemistry, the journal publishes a stimulating mixture of Accounts, Full Papers, Notes and Communications in English.