Ultrasonically sprayed-on perovskite solar cells-effects of organic cation on defect formation of CH3NH3PbI3 films
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Henjongchom N., Rujisamphan N., Ntia T.S., Kumnorkaew P., Tang I.-M., Amornkitbumrung V., Supasai T.
Publisher: Elsevier
Publication year: 2019
Journal: Current Applied Physics (1567-1739)
Volume number: 19
Issue number: 12
Start page: 1427
End page: 1435
Number of pages: 9
ISSN: 1567-1739
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
Methylammonium lead iodide (CH3NH3PbI3) based perovskite having low degrees of the disorder is of great interest for optoelectronic and photovoltaic applications. In this work, a layer of CH3NH3PbI3 was successfully prepared using an ultrasonically sprayed-nebulous method. Changes in structural and optical properties alongside with photo-induced charge separation and transportation behavior were systematically studied. The surface photovoltage spectra reveal a significant reduction of the density of deep defect states as the organic content was increased. It was observed that the measured values of Urbach energies decrease from 33.36 to 28.24 meV as the amount of organic content was increased to an optimum value. The best perovskite solar cells obtained using the sprayed-on approach exhibited a Jsc of 16.54 mA/cm2, a Voc of 0.99 V, and a FF of 62.4, resulting in an overall PCE of 10.09%. ฉ 2019
Keywords
Defect states, Ultrasonic-sprayed perovskite
Contact Information