Abstract
We report the structural, optical, and electrical properties of A 3 B 2 X 9 halides (where A = Cs, methylammonium (MA), formamidinium (FA), or ethylammonium; B = As, Sb, or Bi; X = Cl, Br, or I). Substitution results in tuning of lattice parameters involving crystal structure change, hence tuning of band gap energy, from ~1.9 to ~3.1 eV. Our results on the band gap energy, type, and crystal structure changes by A, B and X site substitution would give very useful information to develop wide band gap light-absorbers for diverse optoelectronic applications, including highly efficient and stable tandem solar cells.
Original language | English |
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Pages (from-to) | 107-111 |
Number of pages | 5 |
Journal | Scripta Materialia |
Volume | 166 |
DOIs | |
State | Published - Jun 2019 |
Keywords
- Band gap
- Crystal structure
- Electrical property
- Hybrid perovskite
- Substitution