Perovskite-based solar cells with nickel-oxidized nickel oxide hole transfer layer

Wei Chih Lai, Kun Wei Lin, Tzung Fang Guo, Jung Lee

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


We demonstrated the methylammonium lead iodide (CH3NH3PbI3) perovskite-based solar cells (SCs) with nickel (Ni)-oxidized nickel oxide (NiOx) hole transport layer. The CH3NH3PbI3 perovskite-based SCs with Ni-oxidized NiOx have better short-circuit current density ( JSC), open circuit voltage (VOC), and conversion efficiency (η%) than poly(3,4- ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS). In addition, the transmittance and work function increased with increasing oxidation temperature of Ni-oxidized NiOx layer. The larger transmittance and work function of Ni-oxidized NiOx could result in less light absorption and hole transport energy loss, respectively. Furthermore, Ni-oxidized NiOx at 450 °C shows the smoothest surface morphology, which could result in the spin-coated CH3NH3PbI3 perovskite film to have better crystal quality. Therefore, the SCs with 450 °C Ni-oxidized NiOx hole transport show the largest η% of 7.75% that is ∼1.78 times larger than that of SCs with PEDOT:PSS hole transport layer.

Original languageEnglish
Article number7072522
Pages (from-to)1590-1595
Number of pages6
JournalIEEE Transactions on Electron Devices
Issue number5
Publication statusPublished - 2015 May 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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