High open-circuit voltage solar cells based on organic-inorganic lead bromide perovskite

Eran Edri, Saar Kirmayer, David Cahen, Gary Hodes

Research output: Contribution to journalArticlepeer-review

499 Scopus citations

Abstract

Mesoscopic solar cells, based on solution-processed organic-inorganic perovskite absorbers, are a promising avenue for converting solar to electrical energy. We used solution-processed organic-inorganic lead halide perovskite absorbers, in conjunction with organic hole conductors, to form high voltage solar cells. There is a dire need for low-cost cells of this type, to drive electrochemical reactions or as the high photon energy cell in a system with spectral splitting. These perovskite materials, although spin-coated from solution, form highly crystalline materials. Their simple synthesis, along with high chemical versatility, allows tuning their electronic and optical properties. By judicious selection of the perovskite lead halide-based absorber, matching organic hole conductor, and contacts, a cell with a ∼ 1.3 V open circuit voltage was made. While further study is needed, this achievement provides a general guideline for additional improvement of cell performance.

Original languageEnglish
Pages (from-to)897-902
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume4
Issue number6
DOIs
StatePublished - 21 Mar 2013
Externally publishedYes

Keywords

  • high open-circuit voltage cells
  • mesoscopic solar cells
  • organic-inorganic hybrids
  • perovskite lead-halide absorbers

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