@article { ISI:000458705500053,
	title = {ZnO/SnO2 Double Electron Transport Layer Guides Improved Open Circuit Voltage for Highly Efficient CH3NH3PbI3-Based Planar Perovskite Solar Cells},
	journal = {ACS APPLIED ENERGY MATERIALS},
	volume = {1},
	number = {5},
	year = {2018},
	month = {MAY},
	pages = {2215-2221},
	abstract = {The electron transport layer (ETL), as an important component of planar perovskite solar cells (P-PSCs), can effectively extract photon-generated electrons from perovskites and convey them to the cathode; by this token, its properties directly determine the photovoltaic performances of P-PSCs. Herein, we introduce a ZnO/SnO2 double electron transport layer for CH3NH3PbI3-based P-PSCs, achieving a high open circuit voltage (V-OC) of 1.15 V with the power conversion efficiency (PCE) of 19.1\% when the SnO2-based devices have a V-OC of 1.07 V and a PCE of 18.0\%; to the best of our knowledge, this is the highest V-OC obtained by using an inorganic electron transport layer for pure CH3NH3PbI3-based P-PSCs so far. This result demonstrates that a higher Fermi energy (E-F) and conduction band minimum (E-CBM) of ETL could drive a higher V-OC and a better PCE.},
	issn = {2574-0962},
	doi = {10.1021/acsaem.8b00293},
	author = {Wang, Duo and Wu, Cuncun and Luo, Wei and Guo, Xuan and Qu, Bo and Xiao, Lixin and Chen, Zhijian}
}
