Cited 111 time in webofscience Cited 112 time in scopus

Hysteresis-less mesoscopic CH(3)NH(3)Pbl(3) perovskite hybrid solar cells by introduction of Li-treated TiO2 electrode

Title
Hysteresis-less mesoscopic CH(3)NH(3)Pbl(3) perovskite hybrid solar cells by introduction of Li-treated TiO2 electrode
Authors
Heo, Jin HyuckYou, Myoung SangChang, Min HyukYin, WenpingAhn, Tae KyuLee, Sang-JuSung, Shi-JoonKim, Dae HwanIm, Sang Hyuk
DGIST Authors
Sung, Shi-Joon; Kim, Dae Hwan
Issue Date
2015-07
Citation
Nano Energy, 15, 530-539
Type
Article
Article Type
Article
Keywords
Average PowerCarrier TransportCharge SeparationsConduction Band EdgeConversion EfficiencyElectrodesHybrid Solar CellsHysteresisJ-V HysteresisLi-TreatmentLithiumMethylammoniumleadtriiodidePerovskitePower Conversion EfficienciesScan DirectionScanningSolar CellsSuperconducting MaterialsTrap Density
ISSN
2211-2855
Abstract
A great current density-voltage (J-V) hysteresis with respect to the scan direction is important issue in perovskite hybrid solar cells because the power conversion efficiency is sometimes incorrect. Here, we demonstrated >17% mesoscopic CH3NH3PbI3 (MAPbI3) perovskite hybride solar cells without significant J-V hysteresis with respective to the scan direction and rated by using Li-treated mesoscopic TiO2 electrode. The Li-treated mesoscopic TiO2 electrode improved charge separation/injection from MAPbI3 into mesoscopic TiO2, charge transport in mesoscopic TiO2, and surface traps because the conduction band edge of mesoscopic TiO2 was lowered by ~0.1eV, the mobility of charge carriers was increased from ~1.1×10-6cm2/Vs to ~2.5×10-6cm2/Vs, the conductivity of mesoscopic TiO2 was increased from ~5.6×10-7S/cm to ~1.6×10-6S/cm, and the trap density was reduced from ~1.2×1016cm-3 to ~9.3×1015cm-3 through Li-treatment. Therefore, the average power conversion efficiency was significantly enhanced from 14.84% to 17.26% at 1sun condition by the Li-treatment of mesoscopic TiO2. © 2015.
URI
http://hdl.handle.net/20.500.11750/5183
DOI
10.1016/j.nanoen.2015.05.014
Publisher
Elsevier B.V.
Related Researcher
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE