Hybrid lead halide iodide and lead halide bromide in efficient hole conductor free perovskite solar cell

Sigalit Aharon, Bat El Cohen, Lioz Etgar

Research output: Contribution to journalArticlepeer-review

Abstract

In this work we used CH3NH3PbInBr 3-n (where 0 ≤ n ≤ 3) as hole conductor and light harvester in the solar cell. Various concentrations of methylammonium iodide and methylammonium bromide were studied which reveal that any composition of the hybrid CH3NH3PbInBr3-n can conduct holes. The hybrid perovskite was deposited in two steps, separating it to two precursors to allow better control of the perovskite composition and efficient tuning of its band gap. The X-ray diffraction reveals the change in the lattice parameter due to the introducing of the Br- ions. The hybrid iodide/bromide perovskite hole conductor free solar cells show very good stability, their power conversion efficiency achieved 8.54% under 1 sun illumination with current density of 16.2 mA/cm2. The results of this work open the possibility for graded structure of perovskite solar cells without the need for hole conductor.

Original languageAmerican English
Pages (from-to)17160-17165
Number of pages6
JournalJournal of Physical chemistry c
Volume118
Issue number30
DOIs
StatePublished - 31 Jul 2014

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry

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