Metal Contact and Carrier Transport in Single Crystalline CH3NH3PbBr3 Perovskite
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Type
ArticleAuthors
Lin, Chun-HoLi, Ting-You

Cheng, Bin
Liu, Changxu

Yang, Chih-Wen

Ke, Jr-Jian
Wei, Tzu-Chiao
Li, Lain-Jong

Fratalocchi, Andrea

He, Jr-Hau
KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Material Science and Engineering Program
PRIMALIGHT Research Group
Physical Science and Engineering (PSE) Division
KAUST Grant Number
OSR-2016-CRG5-3005FCC/1/3079-08-01
Date
2018-09-21Online Publication Date
2018-09-21Print Publication Date
2018-11Permanent link to this record
http://hdl.handle.net/10754/628790
Metadata
Show full item recordAbstract
Organic-inorganic perovskites have arrived at the forefront of solar technology due to their impressive carrier lifetimes and superior optoelectronic properties. By having the cm-sized perovskite single crystal and employing device patterning techniques, and the transfer length method (TLM), we are able to get the insight into the metal contact and carrier transport behaviors, which is necessary for maximizing device performance and efficiency. In addition to the metal work function, we found that the image force and interface charge pinning effects also affect the metal contact, and the studied single crystal CH3NH3PbBr3 features Schottky barriers of 0.17 eV, 0.38 eV, and 0.47 eV for Au, Pt, and Ti electrodes, respectively. Furthermore, the surface charges lead to the thermally activated transport from 207 K to 300 K near the perovskite surface. In contrast, from 120 K to 207 K, the material exhibited three-dimensional (3D) variable range hopping (VRH) carrier transport behavior. Understanding these fundamental contact and transport properties of perovskite will enable future electronic and optoelectronic applications.Citation
Lin C-H, Li T-Y, Cheng B, Liu C, Yang C-W, et al. (2018) Metal Contact and Carrier Transport in Single Crystalline CH3NH3PbBr3 Perovskite. Nano Energy. Available: http://dx.doi.org/10.1016/j.nanoen.2018.09.049.Sponsors
This work was financially supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-3005), KAUST solar center (FCC/1/3079-08-01), and KAUST baseline funding.Publisher
Elsevier BVJournal
Nano EnergyAdditional Links
https://www.sciencedirect.com/science/article/pii/S2211285518306931ae974a485f413a2113503eed53cd6c53
10.1016/j.nanoen.2018.09.049