TY  - JOUR
JF  - Solar Energy Materials and Solar Cells
KW  - Perovskites
KW  -  Optical properties
KW  -  Photovoltaic
KW  -  Semiconductors
SN  - 0927-0248
ID  - upm57086
UR  - https://www.sciencedirect.com/science/article/pii/S0927024819303514
A1  - Tablero Crespo, César
IS  - 110022
AV  - public
SP  - 1
N1  - Silicio y Nuevos Conceptos para Células Solares
PB  - Elsevier B.V.
VL  - 200
N2  - The effect of 14 organic cations on the optical properties of the lead iodine perovskite is analyzed. The electronic and optical properties are obtained using first principles. The absorption coefficients are split into inter-atomic species components in order to quantify all of the contributions. For energies close to the bandgaps, the main contribution is from the Pb?Pb intra-species transitions. For higher energy this contribution is still important in addition to I?I and Pb?I contributions, and to the 3 and 4 species term. Almost all absorption properties are qualitatively similar. Furthermore, this absorption coefficient splitting also allows the optical characteristics that the substitution of Pb by another element should satisfy to be identified in order to reduce the toxicity because of Pb while maintaining a high absorption capacity.
Y1  - 2019/09//
TI  - Effect of the organic cation on the optical properties of Lead Iodine perovskites
EP  - 5
ER  -