ZnO hybrid photovoltaics with variable side-chain lengths of thienothiophene polymer

Seungjin Han, Zhuping Fei, K. D.G.I. Jayawardena, Michail J. Beliatis, Yoon Bong Hahn, A. A.D.T. Adikaari, Martin J. Heeney, S. Ravi P. Silva

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The effect of the side-chain length of poly(3,6-dialkylthieno[3,2-b]thiophene-co-bithiophene) (pATBT) on the performance of hybrid polymer-metal oxide photovoltaics (PVs) utilizing zinc oxide (ZnO) acceptor is investigated. The pATBT attached with a dodecyl side chain (pATBT-C12) in hybrid photovoltaics with ZnO was compared to pATBT with a hexadecyl side chain (pATBT-C16). Atomic force microscopic analysis reveals a smoother surface for the pATBT-C16 photoactive layer compared to the pATBT-C12. For hybrid PVs using pATBT-C16, the relative intensity of the external quantum efficiency (EQE) increased particularly in wavelength region associated with the ZnO. Furthermore, the EQE spectrum shows a red shift for pATBT-C16 indicating better structural ordering compared to hybrid PVs with pATBT-C12. As a result, the hybrid PV utilizing pATBT-C16:ZnO blend layer is observed to display a better performance with a power conversion efficiency of 1.02% compared to 0.672% of pATBT-C12:ZnO PV.
Original languageEnglish (US)
Pages (from-to)38-41
Number of pages4
JournalThin Solid Films
StatePublished - Feb 2 2015
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-14

ASJC Scopus subject areas

  • Materials Chemistry
  • Surfaces and Interfaces
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys


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