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Study of hole-transporter-free perovskite solar cells based on fully printable components
, Article Micromachines ; Volume 10, Issue 4 , 2019 ; 2072666X (ISSN) ; Raptis, D ; Mohammadi, M. R ; Lianos, P ; Sharif University of Technology
MDPI AG
2019
Abstract
Hole-transporter-free perovskite solar cells carrying a carbon back contact electrode provide the possibility of making full printable low cost and stable devices, even though their efficiency is substantially lower than those made in the standard configuration. The present work searched for simple and easy routes for constructing such devices, demonstrating that organic components do enhance device efficiency but only to a level that is not worth the trouble nor the cost. Devices based on a triple mesoporous layer of titania/zirconia/carbon with perovskite infiltration gave an efficiency of 10.7%. After 180 days of storing under ambient conditions, a small loss of efficiency has been...
A study on utilizing different metals as the back contact of CH3NH3PbI3 perovskite solar cells
, Article Journal of Materials Chemistry A ; Volume 4, Issue 35 , 2016 , Pages 13488-13498 ; 20507488 (ISSN) ; Shahbazi, S ; Taghavinia, N ; Wu, H. P ; Wei Guang Diau, E ; Sharif University of Technology
Royal Society of Chemistry
2016
Abstract
Organic-inorganic halide perovskite solar cells have attracted considerable interest due to their high efficiency and low fabrication cost. Au and Ag are usually used as the back contact metals but have limitations such as Au is too expensive and Ag is unstable. Here, Pt, Au, Ni, Cu, Cr and Ag were studied as the back contact electrodes for perovskite solar cells. We looked at how the work function of metals can affect their photovoltaic characteristics. The compositional and electrical characterizations were studied using X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). The general trend observed was that the shunt resistance and open-circuit voltage...