https://scholars.lib.ntu.edu.tw/handle/123456789/547017
標題: | Surface properties of buffer layers affect the performance of PM6:Y6–based organic photovoltaics | 作者: | Jiang, B.-H. Chan, P.-H. Su, Y.-W. Hsu, H.-L. Jeng, R.-J. Chen, C.-P. RU-JONG JENG |
關鍵字: | Nickel oxide; Organic photovoltaic; Power conversion efficiency; Zinc oxide | 公開日期: | 2020 | 卷: | 87 | 來源出版物: | Organic Electronics | 摘要: | In this study we used p-type [poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) and nickel oxide] and n-type (sol–gel and nanoparticle zinc oxides) materials as transporting layers for PM6:Y6–based organic photovoltaic (OPV) devices. These solution-processed transporting layers exhibited various surface energies, morphologies, and roughnesses that affected the subsequent growth of PM6:Y6 blend films. Using atomic force microscopy and grazing-incidence wide-angle X-ray spectroscopy, we observed various PM6:Y6 blend film morphologies on the different substrates. Furthermore, the surface-induced PM6:Y6 blend morphology influenced the mechanism of carrier recombination and, thereby, affected the device performance. Among our tested systems, the PEDOT:PSS–based devices exhibited superior surface properties, possessed larger phase-segregated domains, and featured strong molecular packing, all of which resulted in OPVs displaying power conversion efficiencies (PCEs) of up to 11.5%. When incorporating 1-chloronaphthalene as an additive during solution processing, the molecular packing was enhanced, thereby improving the PCE of the resulting devices from 11.5 to 13.4%. Devices incorporating ZnO (sol–gel) displayed performance comparable with that of the PEDOT:PSS–based devices, but exhibited superior air stability without encapsulation (25 °C, 40% humidity). © 2020 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.url?eid=2-s2.0-85091336862&partnerID=40&md5=dc32cf06273a9e92c3bd56104bcb3599 https://scholars.lib.ntu.edu.tw/handle/123456789/547017 |
DOI: | 10.1016/j.orgel.2020.105944 | SDG/關鍵字: | Atomic force microscopy; Buffer layers; Charge carriers; II-VI semiconductors; Morphology; Nickel oxide; Organic solar cells; Oxide minerals; Sols; Surface properties; X ray spectroscopy; Zinc oxide; Carrier recombination; Different substrates; Organic photovoltaic devices; Organic photovoltaics; Poly-3 ,4-ethylenedioxythiophene; Polystyrene sulfonate; Power conversion efficiencies; Solution-processing; Conducting polymers |
顯示於: | 高分子科學與工程學研究所 |
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