Active-layer evolution and efficiency improvement of (CH3NH3 3Bi2I9-based solar cell on TiO2-deposited ITO substrate

Xinqian Zhang, Gang Wu, Zhuowei Gu, Bing Guo, Wenqing Liu, Shida Yang, Tao Ye, Chen Chen, Weiwei Tu, Hongzheng Chen

Research output: Contribution to journalArticlepeer-review

102 Scopus citations

Abstract

We systematically investigated the development of film morphology and crystallinity of methyl-ammonium bismuth (III) iodide (MA3Bi2I9) through onestep spin-coating on TiO2-deposited indium tin oxide (ITO)/glass. The precursor solution concentration and substrate structure have been demonstrated to be critically important in the active-layer evolution of the MA3Bi2I9-based solar cell. This work successfully improved the cell efficiency to 0.42% (average: 0.38%) with the mesoscopic architecture of ITO/compact-TiO2/mesoscopic-TiO2 (meso-TiO2)/MA3Bi2I9/2,2′,7,7′-tetrakis(N,N-di-4-methoxyphenylamino)-9,9′spiro-bifluorene (spiro-MeOTAD)/MoO3/Ag under a precursor concentration of 0.45 M, which provided the probability of further improving the efficiency of the Bi3+-based lead-free organic–inorganic hybrid solar cells. [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)2921-2930
Number of pages10
JournalNano Research
Volume9
Issue number10
DOIs
StatePublished - 1 Oct 2016
Externally publishedYes

Keywords

  • methyl-ammonium bismuth (III) iodide
  • morphology and crystallinity
  • organic–inorganic hybrid solar cell
  • precursor solution concentration
  • TiO-depostied indium tin oxide (ITO) substrate

Fingerprint

Dive into the research topics of 'Active-layer evolution and efficiency improvement of (CH3NH3 3Bi2I9-based solar cell on TiO2-deposited ITO substrate'. Together they form a unique fingerprint.

Cite this