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Alam, Shahidul [Author]; Anand, Aman [Author]; Islam, Md Moidul [Author]; Meitzner, Rico [Author]; Djoumessi, Aurelien Sokeng [Author]; Slowik, Josef [Author]; Teklu, Zekarias [Author]; Fischer, Peter [Author]; Kästner, Christian [Author]; Khan, Jafar I. [Author]; Schubert, Ulrich Sigmar [Author]; Laquai, Frédéric [Author]; Hoppe, Harald [Author]

P3HT:PCBM polymer solar cells from a didactic perspective

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  • Media type: E-Article
  • Title: P3HT:PCBM polymer solar cells from a didactic perspective
  • Contributor: Alam, Shahidul [VerfasserIn]; Anand, Aman [VerfasserIn]; Islam, Md Moidul [VerfasserIn]; Meitzner, Rico [VerfasserIn]; Djoumessi, Aurelien Sokeng [VerfasserIn]; Slowik, Josef [VerfasserIn]; Teklu, Zekarias [VerfasserIn]; Fischer, Peter [VerfasserIn]; Kästner, Christian [VerfasserIn]; Khan, Jafar I. [VerfasserIn]; Schubert, Ulrich Sigmar [VerfasserIn]; Laquai, Frédéric [VerfasserIn]; Hoppe, Harald [VerfasserIn]
  • imprint: 2022
  • Published in: Journal of photonics for energy ; 12(2022), 3, Seite 035501-1-035501-19
  • Language: English
  • DOI: 10.1117/1.JPE.12.035501
  • ISSN: 1947-7988
  • Identifier:
  • Origination:
  • Footnote:
  • Description: Here, we studied the influence of pre- and post-thermal annealing on the performance of polymer:fullerene bulk heterojunction solar cells using the conventional architecture, comprising a conjugated polymer, namely, poly(3-hexylthiophene-2,5-diyl) (P3HT) and a fullerene derivative [6,6]-phenyl-C60-butyric acid methyl ester (PC60BM) as a photoactive layer. The non-annealed active layer device exhibited a power conversion efficiency of <1 % , which was significantly lower than the pre- and post-annealed devices. To investigate the impact of pre- and post thermal annealing on the natural morphological state of the polymer, regiorandom (P3HT-I) and regioregular (P3HT-II) type P3HT were compared in photoactive layers. In general, P3HT-I is amorphous, whereas P3HT-II is semi-crystalline. Changes in solar cell performance were associated with changes in carrier extraction efficiencies influenced by the annealing conditions. The charge photogeneration processes were investigated using spectroscopic techniques, including electroluminescence, steady-state, and time-resolved photoluminescence spectroscopy. Finally, to explore the morphological changes upon annealing, atomic force microscopy and electroluminescence imaging measurements were performed on films and solar cells, respectively.
  • Access State: Open Access