Synergy study on charge transport dynamics in hybrid organic solar cell: Photocurrent mapping and performance analysis under local spectrum

Kai Jeat Hong, Sin Tee Tan, Kok Keong Chong, Hock Beng Lee, Riski Titian Ginting, Fang Sheng Lim, Chi Chin Yap, Chun Hui Tan, Wei Sea Chang, Mohammad Hafizuddin Jumali

Research output: Contribution to journalArticle

Abstract

Charge transport dynamics in ZnO based inverted organic solar cell (IOSC) has been characterized with transient photocurrent spectroscopy and localised photocurrent mapping-atomic force microscopy. The value of maximum exciton generation rate was found to vary from 2.6 × 1027 m−3s−1 (Jsat = 79.7 A m−2) to 2.9 × 1027 m−3s−1 (Jsat = 90.8 A m−2) for devices with power conversion efficiency ranging from 2.03 to 2.51%. These results suggest that nanorods served as an excellent electron transporting layer that provides efficient charge transport and enhances IOSC device performance. The photovoltaic performance of OSCs with various growth times of ZnO nanorods have been analysed for a comparison between AM1.5G spectrum and local solar spectrum. The simulated PCE of all devices operating under local spectrum exhibited extensive improvement with the gain of 13.3–13.7% in which the ZnO nanorods grown at 15 min possess the highest PCE under local solar with the value of 2.82%.

Original languageEnglish
Pages (from-to)1564-1570
Number of pages7
JournalCurrent Applied Physics
Volume18
Issue number12
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Nanorods
Photocurrents
nanorods
photocurrents
Charge transfer
solar cells
solar spectra
Excitons
Conversion efficiency
Atomic force microscopy
excitons
atomic force microscopy
Spectroscopy
Electrons
spectroscopy
Organic solar cells
electrons

Keywords

  • Defect
  • Energy band gap
  • Hydrothermal
  • Inverted
  • Nanorod
  • ZnO

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Synergy study on charge transport dynamics in hybrid organic solar cell : Photocurrent mapping and performance analysis under local spectrum. / Hong, Kai Jeat; Tan, Sin Tee; Chong, Kok Keong; Lee, Hock Beng; Ginting, Riski Titian; Lim, Fang Sheng; Yap, Chi Chin; Tan, Chun Hui; Chang, Wei Sea; Jumali, Mohammad Hafizuddin.

In: Current Applied Physics, Vol. 18, No. 12, 01.12.2018, p. 1564-1570.

Research output: Contribution to journalArticle

Hong, Kai Jeat ; Tan, Sin Tee ; Chong, Kok Keong ; Lee, Hock Beng ; Ginting, Riski Titian ; Lim, Fang Sheng ; Yap, Chi Chin ; Tan, Chun Hui ; Chang, Wei Sea ; Jumali, Mohammad Hafizuddin. / Synergy study on charge transport dynamics in hybrid organic solar cell : Photocurrent mapping and performance analysis under local spectrum. In: Current Applied Physics. 2018 ; Vol. 18, No. 12. pp. 1564-1570.
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