P3HT:PCBM polymer solar cells from a didactic perspective

IF 1.5 4区工程技术 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Photonics for Energy Pub Date : 2022-07-01 DOI:10.1117/1.JPE.12.035501

Shah Alam, A. Anand, Md. Moidul Islam, R. Meitzner, Aurelien Sokeng Djoumessi, Josef Slowik, Zekarias Teklu, Peter Fischer, C. Kästner, J. I. Khan, U. Schubert, F. Laquai, H. Hoppe

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引用次数: 1

Abstract

Abstract. Here, we studied the influence of pre- and post-thermal annealing on the performance of polymer:fullerene bulk heterojunction solar cells using the conventional architecture, comprising a conjugated polymer, namely, poly(3-hexylthiophene-2,5-diyl) (P3HT) and a fullerene derivative [6,6]-phenyl-C60-butyric acid methyl ester (PC60BM) as a photoactive layer. The non-annealed active layer device exhibited a power conversion efficiency of <1 % , which was significantly lower than the pre- and post-annealed devices. To investigate the impact of pre- and post thermal annealing on the natural morphological state of the polymer, regiorandom (P3HT-I) and regioregular (P3HT-II) type P3HT were compared in photoactive layers. In general, P3HT-I is amorphous, whereas P3HT-II is semi-crystalline. Changes in solar cell performance were associated with changes in carrier extraction efficiencies influenced by the annealing conditions. The charge photogeneration processes were investigated using spectroscopic techniques, including electroluminescence, steady-state, and time-resolved photoluminescence spectroscopy. Finally, to explore the morphological changes upon annealing, atomic force microscopy and electroluminescence imaging measurements were performed on films and solar cells, respectively.

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P3HT:从教学角度看PCBM聚合物太阳能电池

摘要在此，我们研究了预热退火和后热退火对聚合物性能的影响：使用传统结构的富勒烯本体异质结太阳能电池，包括共轭聚合物，即聚（3-己基噻吩-2,5-二基）（P3HT）和富勒烯衍生物[6,6]-苯基-C60-丁酸甲酯（PC60BM）作为光活性层。未退火的有源层器件表现出<1的功率转换效率 % , 其显著低于退火前和退火后的器件。为了研究预热退火和后热退火对聚合物自然形态的影响，在光活性层中比较了区域性（P3HT-I）和区域规则（P3HT-II）型P3HT。通常，P3HT-I是无定形的，而P3HT-II是半结晶的。太阳能电池性能的变化与受退火条件影响的载流子提取效率的变化有关。使用光谱技术研究了电荷光生过程，包括电致发光、稳态和时间分辨光致发光光谱。最后，为了探索退火后的形态变化，分别对薄膜和太阳能电池进行了原子力显微镜和电致发光成像测量。

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来源期刊

Journal of Photonics for Energy MATERIALS SCIENCE, MULTIDISCIPLINARY-OPTICS

CiteScore

3.20

自引率

5.90%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Photonics for Energy publishes peer-reviewed papers covering fundamental and applied research areas focused on the applications of photonics for renewable energy harvesting, conversion, storage, distribution, monitoring, consumption, and efficient usage.