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

Research output: Contribution to journalArticle

79 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 (VOC) of 0.99 V and a short-circuit current (JSC) of 4.24 mA/cm2 was achieved by device annealing at 70 °C for 20 min.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalOrganic Electronics: physics, materials, applications
Volume10
Issue number1
DOIs
Publication statusPublished - 01-02-2009

Fingerprint

Fullerenes
fullerenes
Heterojunctions
heterojunctions
Solar cells
Polymers
solar cells
Annealing
Conversion efficiency
annealing
polymers
Butyric acid
Open circuit voltage
Volatile organic compounds
Short circuit currents
butyric acid
Charge transfer
volatile organic compounds
Esters
short circuit currents

All Science Journal Classification (ASJC) codes

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

Cite this

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. / Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend. In: Organic Electronics: physics, materials, applications. 2009 ; Vol. 10, No. 1. pp. 27-33.
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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 journalArticle

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