Optical properties and first principles study of CH3NH3PbBr3 perovskite structures for solar cell application
Type
Conference PaperAuthors
Al Ghaithi, Asma O.Assa Aravindh, S.
Hedhili, Mohamed N.

Ng, Tien Khee

Ooi, Boon S.

Najar, Adel
KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Photonics Laboratory
Surface Science
Date
2020-08-15Online Publication Date
2020-08-15Print Publication Date
2021Permanent link to this record
http://hdl.handle.net/10754/665193
Metadata
Show full item recordAbstract
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.Citation
Al Ghaithi, A. O., Assa Aravindh, S., Hedhili, M. N., Ng, T. K., Ooi, B. S., & Najar, A. (2020). Optical Properties and First Principles Study of CH3NH3PbBr3 Perovskite Structures for Solar Cell Application. Proceedings of the 2nd International Conference on Electronic Engineering and Renewable Energy Systems, 275–282. doi:10.1007/978-981-15-6259-4_28Sponsors
This work was supported by UAE University, under NSS Center Project No. 21R032 and UPAR-project No 31S306. S. Assa Aravindh gratefully acknowledge CSC-IT, Finland for computational resources and Academy of Finland (# 311934).Publisher
Springer SingaporeConference/Event name
2nd International Conference on Electronic Engineering and Renewable Energy, ICEERE 2020ISBN
9789811562587Additional Links
http://link.springer.com/10.1007/978-981-15-6259-4_28ae974a485f413a2113503eed53cd6c53
10.1007/978-981-15-6259-4_28