Multiscale Evolution of Bulk Heterojunction Solar Cell Active Layers under Thermal Stress,Analytical Chemistry

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Multiscale Evolution of Bulk Heterojunction Solar Cell Active Layers under Thermal Stress
Analytical Chemistry ( IF 6.7 ) Pub Date : 2020-12-17 , DOI: 10.1021/acs.analchem.0c04461
Fei Zhao ₁ , Seth L. Filbrun ₁ , Tengxiang Huang ₁ , Bin Dong ₁ , Ning Fang ₁

Affiliation

A multimodality spectromicroscopy imaging system has been developed to offer the essential capability of in situ characterization of functional materials at multiple length scales during the morphology evolution and phase development under external stimuli. The photoactive layer of bulk heterojunction solar cell, whose performance is strongly correlated to the structural features over a wide range of length scales, was characterized under thermal stress. Three stages of thermotropic evolution were monitored continuously by the spectromicroscopy imaging system to reveal the critical information from the molecular level to meso- and microscale. The optimized thermal annealing temperature window and preferred temperature dropping operation were identified to promote the performance of the photoactive layer.

中文翻译：

热应力作用下大体积异质结太阳能电池活性层的多尺度演化

已经开发了一种多模态光谱显微镜成像系统，以提供在外部刺激下在形态演化和相发展过程中以多种长度尺度原位表征功能材料的基本能力。在热应力下表征了块状异质结太阳能电池的光敏层，该层的性能与各种长度尺度上的结构特征密切相关。通过光谱显微镜成像系统连续监测热致演化的三个阶段，以揭示从分子水平到介观和微观尺度的关键信息。确定了优化的热退火温度窗口和优选的降温操作，以提高光敏层的性能。

更新日期：2021-01-26

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