Ni,Ti-co-doped MoO2 nanoparticles with high stability and improved conductivity for hole transporting material in planar metal halide perovskite solar cells

Jin Hyuck Heo, Kyungmin Im, Hyong Joon Lee, Jinsoo Kim, Sang Hyuk Im

Research output: Contribution to journalArticlepeer-review

Abstract

Ni,Ti-co-doped MoO2 nanoparticles with excellent moisture stability and improved conductivity are synthesized via solvothermal cracking process for hole transporting material (HTM) in metal halide perovskite solar cells (MHP SCs). The Ni,Ti-doped MoO2 has similar oxidation state with pristine MoO2, but has better reduction stability than the MoO2 due to the weaker electronegativity of Ni and Ti than the Mo. Accordingly, the Ni,Ti-co-doped MoO2 HTM based MHP SC has 18.1% of power conversion efficiency at 1 sun (100 mW/cm2) condition. In addition, the un-encapsulated Ni,Ti-co-doped MoO2 HTM based MHP SC has 12–13% degradation after stability test under 85 °C/60% relative humidity for 20 days.

Original languageEnglish
Pages (from-to)376-383
Number of pages8
JournalJournal of Industrial and Engineering Chemistry
Volume94
DOIs
Publication statusPublished - 2021 Feb 25
Externally publishedYes

Keywords

  • Hole transporting material
  • Moisture stability
  • Ni,Ti-co-doped MoO
  • Perovskite solar cells
  • Solvothermal cracking process

ASJC Scopus subject areas

  • Chemical Engineering(all)

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