To Maximize Luminescence for an Efficient Organic Solar Cell†

IF 5.5 1区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chinese Journal of Chemistry Pub Date : 2024-09-10 DOI:10.1002/cjoc.202400543

Yifei Geng, Tengfei Li, Zhenzhen Zhang, Yuze Lin

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Abstract

Comprehensive Summary

With the continuous development of photovoltaic materials, organic solar cells (OSCs) have made remarkable advancements, surpassing a power conversion efficiency (PCE) of 20%. However, the PCEs of OSCs remain lower than that of inorganic solar cells due to significant energy losses, mainly stemming from the relatively large non-radiative recombination losses (usually be expressed as ∆E₃), resulting in low open-circuit voltages. This can be achieved by reducing non-radiative recombination, and hereby increasing the electroluminescence quantum efficiency (EQE_EL) of the photo-active layer. This review analyzes the significance of luminescence efficiency in achieving high-performance OSCs by examining the reciprocal relationship between ∆E₃ and EQE_EL. High-efficiency organic solar cells can also be used as effective organic light-emitting diodes (OLEDs). The discussion provides insights into the influencing factors of EQE_EL and the mechanisms for adjusting various parameters, which include enhancements in photoluminescence quantum yield and the proportion of radiative excitons. The objective is to offer insights into the crucial role of luminescence performance in OSC development, guiding researchers toward developing novel photovoltaic materials or optimization strategies to enhance the luminescence performance of the active layer in OSCs, fostering the simultaneous advancement of OSCs and OLEDs.

Key Scientists

Abstract Image

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最大限度地提高高效有机太阳能电池的发光效率†。

综合摘要随着光伏材料的不断发展，有机太阳能电池（OSC）取得了显著进步，其功率转换效率（PCE）已超过 20%。然而，有机太阳能电池的 PCE 仍低于无机太阳能电池，原因是存在大量能量损失，主要来自相对较大的非辐射重组损失（通常用 ∆E3 表示），导致开路电压较低。这可以通过减少非辐射重组来实现，从而提高光活性层的电致发光量子效率（EQEEL）。这篇综述通过研究 ∆E3 和 EQEEL 之间的相互关系，分析了发光效率对实现高性能 OSC 的重要意义。高效有机太阳能电池也可用作有效的有机发光二极管（OLED）。讨论深入探讨了 EQEEL 的影响因素和各种参数的调整机制，其中包括光致发光量子产率和辐射激子比例的提高。目的是深入探讨发光性能在 OSC 开发中的关键作用，引导研究人员开发新型光伏材料或优化策略，以提高 OSC 中有源层的发光性能，促进 OSC 和 OLED 的同步发展。

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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.