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Unusual defect physics in CH3NH3PbI3 perovskite solar cell absorber
Thin-film solar cells based on Methylammonium triiodideplumbate (CH3NH3PbI3) halide perovskites have recently shown remarkable performance. First-principle calculations show that CH3NH3PbI3 has
Low-temperature solution-processed tin oxide as an alternative electron transporting layer for efficient perovskite solar cells.
Low-temperature solution-processed nanocrystalline SnO2 can be an excellent alternative ETL material for efficient perovskite solar cells and its best-performing planar cell has achieved an average efficiency of 16.02%.
Characterization of 19.9%-efficient CIGS absorbers
We recently reported a new record total-area efficiency, 19.9%, for CuInGaSe2 (CIGS)-based thin-film solar cells [1]. Current-voltage analysis indicates that improved performance in the record device
Direct Growth of Highly Mismatched Type II ZnO/ZnSe Core/Shell Nanowire Arrays on Transparent Conducting Oxide Substrates for Solar Cell Applications
A number of nanometer-scale photovoltaic (PV) concepts based on semiconductor nanowires have been developed or proposed in recent years, with either inorganic/organic hybrid or all-inorganic
Band Edge Electronic Structure of BiVO4: Elucidating the Role of the Bi s and V d Orbitals
We report the first-principles electronic structure of BiVO4, a promising photocatalyst for hydrogen generation. BiVO4 is found to be a direct band gap semiconductor, despite having band extrema away
Halide perovskite materials for solar cells: a theoretical review
Halide perovskites have recently emerged as promising materials for low-cost, high-efficiency solar cells. The efficiency of perovskite-based solar cells has increased rapidly, from 3.8% in 2009 to
Doping of ZnO by group-IB elements
The authors present their first-principles calculations of doping effects in ZnO with group-IB elements such as Cu, Ag, and Au. The calculated transition energies e(0∕−) for substitutional Cu, Ag,
Comparative study of the luminescence and intrinsic point defects in the kesterite Cu2ZnSnS4 and chalcopyrite Cu(In,Ga)Se2 thin films used in photovoltaic applications
The kesterite Cu 2 ZnSnS 4 (CZTS) is attracting considerable interest because first principles calculations predict that its electronic properties must be similar to their associated chalcopyrite
Unique Properties of Halide Perovskites as Possible Origins of the Superior Solar Cell Performance
Halide perovskites solar cells have the potential to exhibit higher energy conversion efficiencies with ultrathin films than conventional thin-film solar cells based on CdTe, CuInSe2 , and Cu2
Efficient and stable emission of warm-white light from lead-free halide double perovskites
After alloying with metal cations, a lead-free halide double perovskite shows stable performance and remarkably efficient white-light emission, with possible applications in lighting and display technologies.