https://scholars.lib.ntu.edu.tw/handle/123456789/577237
標題: | Facile Fabrication of Self-Assembly Functionalized Polythiophene Hole Transporting Layer for High Performance Perovskite Solar Cells | 作者: | Chang C.-Y Huang H.-H Tsai H Lin S.-L Liu P.-H Chen W Hsu F.-C Nie W Chen Y.-F Wang L. LEE-YIH WANG |
關鍵字: | Charge carriers; Crystal orientation; Crystallinity; Fabrication; Film growth; Monolayers; Nanocrystalline materials; Open circuit voltage; Perovskite; Self assembly; Single crystals; Tin oxides; Device characterization; Hole transporting layers; Hole-transporting materials; Indium tin oxide electrodes; Inter-connecting layers; Preferred orientations; Semi-conducting property; Single-crystal quality; Perovskite solar cells | 公開日期: | 2021 | 卷: | 8 | 期: | 5 | 來源出版物: | Advanced Science | 摘要: | Crystallinity and crystal orientation have a predominant impact on a materials’ semiconducting properties, thus it is essential to manipulate the microstructure arrangements for desired semiconducting device performance. Here, ultra-uniform hole-transporting material (HTM) by self-assembling COOH-functionalized P3HT (P3HT-COOH) is fabricated, on which near single crystal quality perovskite thin film can be grown. In particular, the self-assembly approach facilitates the P3HT-COOH molecules to form an ordered and homogeneous monolayer on top of the indium tin oxide (ITO) electrode facilitate the perovskite crystalline film growth with high quality and preferred orientations. After detailed spectroscopy and device characterizations, it is found that the carboxylic acid anchoring groups can down-shift the work function and passivate the ITO surface, retarding the interface carrier recombination. As a result, the device made with the self-assembled HTM show high open-circuit voltage over 1.10?V and extend the lifetime over 4,300?h when storing at 30% relative humidity. Moreover, the cell works efficiently under much reduced light power, making it useful as power source under dim-light conditions. The demonstration suggests a new facile way of fabricating monolayer HTM for high efficiency perovskite devices, as well as the interconnecting layer needed for tandem cell. ? 2021 The Authors. Advanced Science published by Wiley-VCH GmbH |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099071140&doi=10.1002%2fadvs.202002718&partnerID=40&md5=cb5e9c8d8161e20f19fec4c513ec19c4 https://scholars.lib.ntu.edu.tw/handle/123456789/577237 |
ISSN: | 21983844 | DOI: | 10.1002/advs.202002718 |
顯示於: | 凝態科學研究中心 |
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