Poly(3-hexylselenophene) solar cells: Correlating the optoelectronic device performance and nanomorphology imaged by low-energy scanning Transmission electron microscopy
Poly(3-hexylselenophene) solar cells: Correlating the optoelectronic device performance and nanomorphology imaged by low-energy scanning Transmission electron microscopy
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DOI：
10.1002/polb.22394
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
M. Klein;M. Pfaff;E. Müller;Jens Czolk;Manuel Reinhard;S. Valouch;U. Lemmer;A. Colsmann;D. Gerthsen
中科院分区：
文献类型：
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作者：
M. Klein;M. Pfaff;E. Müller;Jens Czolk;Manuel Reinhard;S. Valouch;U. Lemmer;A. Colsmann;D. Gerthsen
共轭聚合物聚(3-己基硒-2，5-二基)(P3HS)是一种很有前途的有机太阳能电池的供体材料，因为它的吸收覆盖了730 nm的大部分可见光谱。我们研究了有机光伏器件中P3HS和富勒烯衍生物[6，6]-苯基C61-丁酸甲酯作为活性层的体相异质结。通过使用高角度环形暗场探测器的低能扫描电子显微镜，各个样品的退火导致了针状结构的形成，我们将其识别为P3HS晶须。通过空间傅立叶分析，对纳米结构的尺寸进行了定量描述。电子显微镜的研究结果与宏观光电子器件的性质，即太阳电池的性能参数，与吸收光谱的变化，以及对时间相关的器件光响应的影响是相关的。2011Wiley期刊，Inc.《Polym Sci》B部分：Polym Phys，2012
The conjugated polymer poly(3-hexylselenophene-2,5-diyl) (P3HS) is a promising donor material for organic solar cells as its absorption covers a large part of the visible spectrum up to 730 nm. We investigate bulk heterojunctions of P3HS and the fullerene derivative [6,6]-phenyl C61-butyric acid methyl ester as the active layer in organic photovoltaic devices. Annealing of the respective samples leads to the formation of needle-like structures that we identify as P3HS whiskers by means of low-energy scanning transmission electron microscopy using a high-angle annular dark-field detector. A quantitative description of the size of the nanostructures was elaborated by means of spatial Fourier analyses. The results of electron microscopic studies are correlated with the macroscopic optoelectronic device properties, that is, solar cell performance parameters, with changes in the absorption spectrum and with the impact on the time-dependent device photoresponse. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2012