https://scholars.lib.ntu.edu.tw/handle/123456789/374107
Title: | Comparative Study of Spectral and Morphological Properties of Blends of P3HT with PCBM and ICBA | Authors: | You-Heng Lin Yu-Tang Tsai CHUNG-CHIH WU Chih-Hung Tsai Chien-Hung Chiang Hsiu-Fu Hsu Jey-Jau Lee Ching-Yuan Cheng |
Keywords: | Fullerene; GIXS; Morphology; Poly(3-hexylthiophene); Polymer solar cells | Issue Date: | Nov-2012 | Journal Volume: | 13 | Journal Issue: | 11 | Start page/Pages: | 2333-2341 | Source: | Organic Electronics | Abstract: | We report a comparative study on spectral and morphological properties of two blend systems for polymer solar cells: the donor material poly(3-hexylthiophene) (P3HT) in combination with the acceptor material of either [6,6]-phenyl-C61 butyric acid methyl ester (PCBM) or indene-C60 bisadduct (ICBA) that was reported to enhance efficiencies of polymer solar cells. Optical microscopy and grazing incidence X-ray scattering reveal the stronger tendency of PCBM to from larger and more ordered domains/grains than ICBA either in pure or blend films. Compared to PCBM, the presence of ICBA also substantially perturbs the organization and longer-range ordering of P3HT in increasing the ICBA ratio in blends. With larger and more ordered phase-separated domains, the P3HT/PCBM blend films exhibit significant optical scattering at higher PCBM ratios. Yet, such optical scattering is not significant for P3HT/ICBA blends (even with high ICBA ratios). Overall, results here suggest the reported higher efficiencies of P3HT/ICBA solar cells (vs. P3HT/PCBM cells) cannot be attributed to larger and/or more ordered phase-separated donor-acceptor domains and other characteristics play more important roles in this case. © 2012 Elsevier B.V. All rights reserved. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/374107 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865059049&doi=10.1016%2fj.orgel.2012.07.023&partnerID=40&md5=4ce499041342f6e0a22cf2d55af0bc03 |
DOI: | 10.1016/j.orgel.2012.07.023 | SDG/Keyword: | Butyric acid; Carrier mobility; Efficiency; Fullerenes; Light scattering; Morphology; Polymer solar cells; Polymers; X ray scattering; Comparative studies; GIXS; Grazing-incidence x-ray scattering; Higher efficiency; Morphological properties; Optical scattering; Poly (3-hexylthiophene); [6 ,6]-phenyl-C61-butyric acid methyl esters; Solar cells |
Appears in Collections: | 電機工程學系 |
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