Crystal Structures of CH3NH3PbI3 and Related Perovskite Compounds Used for Solar Cells

By T. Oku. 2015

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Recently, organic-inorganic hybrid solar cells with perovskite-type pigments have been widely fabricated and rapidly studied [12, 8, 11]. Solar cells with a perovskite structure have high conversion efficiencies and stability as the organic solar cells. Since a photoconversion efficiency of 15% was achieved [2], higher efficiencies have been reported for various device structures and processes [13, 23], and the photoconversion efficiency was increased up to 19.3% [27]. The photovoltaic properties of solar cells are strongly dependent on the fabrication process, hole transport layers, electron transport layers, nanoporous layers, interfacial microstructures, and crystal structures of the perovskite compounds. Especially, the crystal structures of the perovskite-type compounds, strongly affect the electronic structures such as energy band gaps and carrier transport, and a detailed analysis of them is mandatory.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7df8a9f04cc9e634df898f3b21258736b205c456