標題: Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend
作者: Huang, Jen-Hsien
Yang, Chuan-Yi
Ho, Zhong-Yo
Kekuda, Dhananjay
Wu, Meng-Chyi
Chien, Fan-Ching
Chen, Peilin
Chu, Chih-Wei
Ho, Kuo-Chuan
光電工程學系
Department of Photonics
關鍵字: Photovoltaic device;Polymer;F8T2;Annealing effect
公開日期: 1-Feb-2009
摘要: Control of blend morphology at the nanoscale and high charge mobility is essential for polymer photovoltaic devices in terms of their power conversion efficiencies (PCE). In the case of bulk heterojunctions solar cells, both blend morphology and charge mobility are influenced by thermal treatment. In this manuscript, we study the effects of annealing temperature on polymer PV devices with blends of poly[9,9'-dioctyl-fluorene-co-bithiophene] (F8T2) and [6,6]-phenyl-C(61)-butyric acid methyl ester (PCBM). The morphological changes of blended films were observed upon thermal annealing temperature near and above glass transition temperature (130 degrees C). Such microstructural transformations resulted in modified charge transport pathways and therefore greately influenced the device performance. The highest PCE of 2.14% with an open-circuit voltage (V(OC)) of 0.99 V and a short-circuit current (J(SC)) of 4.24 mA/cm(2) was achieved by device annealing at 70 degrees C for 20 min. (C) 2008 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2008.09.007
http://hdl.handle.net/11536/7710
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2008.09.007
期刊: ORGANIC ELECTRONICS
Volume: 10
Issue: 1
起始頁: 27
結束頁: 33
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