Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend

Jen Hsien Huang; Chuan Yi Yang; Zhong Yo Ho; Dhananjay Kekuda; Meng Chyi Wu; Fan Ching Chien; Peilin Chen; Chih Wei Chu; Kuo Chuan Ho

doi:10.1016/j.orgel.2008.09.007

Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend

Jen Hsien Huang, Chuan Yi Yang, Zhong Yo Ho, Dhananjay Kekuda, Meng Chyi Wu, Fan Ching Chien, Peilin Chen, Chih Wei Chu, Kuo Chuan Ho

Department of Physics, Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article

82 Citations (Scopus)

Abstract

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-C₆₁-butyric acid methyl ester (PCBM). The morphological changes of blended films were observed upon thermal annealing temperature near and above glass transition temperature (130 °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/cm² was achieved by device annealing at 70 °C for 20 min.

Original language	English
Pages (from-to)	27-33
Number of pages	7
Journal	Organic Electronics: physics, materials, applications
Volume	10
Issue number	1
DOIs	https://doi.org/10.1016/j.orgel.2008.09.007
Publication status	Published - 01-02-2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Chemistry(all)
Biomaterials
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

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Huang, J. H., Yang, C. Y., Ho, Z. Y., Kekuda, D., Wu, M. C., Chien, F. C., Chen, P., Chu, C. W., & Ho, K. C. (2009). Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend. Organic Electronics: physics, materials, applications, 10(1), 27-33. https://doi.org/10.1016/j.orgel.2008.09.007

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Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend. / 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.

In: Organic Electronics: physics, materials, applications, Vol. 10, No. 1, 01.02.2009, p. 27-33.

Research output: Contribution to journal › Article

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