Surface Effect on 2D Hybrid Perovskite Crystals: Perovskites Using an Ethanolamine Organic Layer as an Example
Type
ArticleAuthors
Ho, Kang-Ting
Leung, Siu
Li, Ting-You

Maity, Partha
Cheng, Bin
Fu, Hui-Chun

Mohammed, Omar F.

He, Jr-Hau

KAUST Department
Chemical Science ProgramComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
KAUST Solar Center (KSC)
Nano Energy Lab
Physical Science and Engineering (PSE) Division
Ultrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
Date
2018-10-01Online Publication Date
2018-10-01Print Publication Date
2018-11Permanent link to this record
http://hdl.handle.net/10754/630574
Metadata
Show full item recordAbstract
Despite the remarkable progress of optoelectronic devices based on hybrid perovskites, there are significant drawbacks, which have largely hindered their development as an alternative of silicon. For instance, hybrid perovskites are well-known to suffer from moisture instability which leads to surface degradation. Nonetheless, the dependence of the surface effect on the moisture stability and optoelectronic properties of hybrid perovskites has not been fully investigated. In this work, the influence of the surface effect of 2D layered perovskites before and after mechanical exfoliation, representing rough and smooth surfaces of perovskite crystals, are studied. It is found that the smooth 2D perovskite is less sensitive to ambient moisture and exhibits a considerably low dark current, which outperforms the rough perovskites by 23.6 times in terms of photodetectivity. The superior moisture stability of the smooth perovskites over the rough perovskites is demonstrated. Additionally, ethanolamine is employed as an organic linker of the 2D layered perovskite, which further improves the moisture stability. This work reveals the strong dependence of the surface conditions of 2D hybrid perovskite crystals on their moisture stability and optoelectronic properties, which are of utmost importance to the design of practical optoelectronic devices based on hybrid perovskite crystals.Citation
Ho K-T, Leung S-F, Li T-Y, Maity P, Cheng B, et al. (2018) Surface Effect on 2D Hybrid Perovskite Crystals: Perovskites Using an Ethanolamine Organic Layer as an Example. Advanced Materials 30: 1804372. Available: http://dx.doi.org/10.1002/adma.201804372.Sponsors
K.T.H. and S.F.L. contributed equally to this work. This work was financially supported by the Office of Sponsored Research of King Abdullah University of Science and Technology (KAUST), KAUST Sensor Initiativ, KAUST Solar Center, and KAUST baseline funding.Publisher
WileyJournal
Advanced MaterialsAdditional Links
https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201804372ae974a485f413a2113503eed53cd6c53
10.1002/adma.201804372