Journal
ELECTROCHIMICA ACTA
Volume 330, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.135280
Keywords
MOF-Derived ZnO; Perovskite solar cells; Electron extraction; Light harvesting
Categories
Funding
- National Nature Science Foundation of China [51702228, 51872171]
- Shandong Province Natural Science Foundation [ZR2017BEM014, ZR201801290005]
- Tai'an Science and Technology Development Plan [2018GX0075]
- Talent Introduction Project of Taishan University [Y-01-2018017]
- Shandong Province Higher Educational Science and Technology Program [J17KA023]
Ask authors/readers for more resources
We adopt Metal-Organic-Framework (MOF)-derived zinc oxide (ZnO) as electron extraction material for hybrid cationic perovskite solar cells for the first time, breaking the prevailing paradigm of using oxides nanoparticle as electron extraction layer. MOF-derived ZnO with a polyhedral morphology and abundant internal porous structure can increase light harvesting ability and optimize the interfacial contact with perovskite. In contrast to conventional ZnO nanoparticles, the introduction of MOF-derived ZnO will achieve more efficient electron extraction, reduction of trapped state density and lower electron-hole recombination probability, thus significantly increase the fill factor and short-circuit current density of the cells. MOF-derived ZnO based perovskite solar cells exhibit a champion power conversion efficiency of 18.1% coupled with improved fill factor of 0.74 and short-circuit current density of 22.1 mA cm(-2). Simultaneously, there is almost no hysteresis effect, and performance attenuation of the device in the ambient atmosphere over time can be suppressed. The performance improvement of perovskite solar cells stems from improved light harvesting efficiency in a wide wavelength range, as well as enhanced carrier extraction efficiency resulted from the increase of interface area between MOF-derived ZnO and perovskites. (C) 2019 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available