@inproceedings{97d84a0f74824d9c837b3166ceeb7254,
title = "Optical properties and first principles study of CH3NH3PbBr3 perovskite structures for solar cell application",
abstract = "Solution-processed organic–inorganic hybrid perovskites have attracted attention as light-harvesting materials for solar cells and photonic applications. The present study focusses on cubic single crystal; microstructures of CH3NH3PbBr3 perovskite fabricated by a one-step solution based self-assembly method. It is seen that, in addition to the nucleation from the precursor solution, the crystallization occurs when the solution was supersaturated, followed by formation of small nucleus of CH3NH3PbBr3 that will self-assembled into bigger hollow cubes. A 3D fluorescence microscope investigation of hollow cubes confirmed the formation of hollow plates on the bottom, then the growth starts from the perimeter and propagate to the center of the cube. Furthermore, the growth in the (001) direction follows a layer-by-layer growth model to form a complete cube, confirmed by SEM observations. To get more insights into the structural and optical properties, density functional theory (DFT) simulations were conducted. The density of state (DOS) calculations revealed that the valence band maximum (VBM) consists of states contributed by Br and Pb, which agrees with the X-ray photoelectron spectroscopy valence band (XPSVB) measurements.",
keywords = "DFT, Optical materials, Perovskite",
author = "{Al Ghaithi}, {Asma O.} and {Assa Aravindh}, S. and Hedhili, {Mohamed N.} and Ng, {Tien Khee} and Ooi, {Boon S.} and Adel Najar",
note = "Publisher Copyright: {\textcopyright} Springer Nature Singapore Pte Ltd. 2021.; 2nd International Conference on Electronic Engineering and Renewable Energy, ICEERE 2020 ; Conference date: 13-04-2020 Through 15-04-2020",
year = "2021",
doi = "10.1007/978-981-15-6259-4_28",
language = "English",
isbn = "9789811562587",
series = "Lecture Notes in Electrical Engineering",
publisher = "Springer",
pages = "275--282",
editor = "Bekkay Hajji and Naimi, {Salah Eddine} and Adel Mellit and {Marco Tina}, Giuseppe and Abdelhamid Rabhi and Jerome Launay",
booktitle = "Proceedings of the 2nd International Conference on Electronic Engineering and Renewable Energy Systems, ICEERE 2020",
}