TY - JOUR
T1 - Micrometer Sized Perovskite Crystals in Planar Hole Conductor Free Solar Cells
AU - Gamliel, Shany
AU - Dymshits, Alex
AU - Aharon, Sigalit
AU - Terkieltaub, Eyal
AU - Etgar, Lioz
N1 - Publisher Copyright:
© 2015 American Chemical Society 2015.
PY - 2015/8/27
Y1 - 2015/8/27
N2 - In this work we demonstrate the planar configuration on hole conductor (HTM) free perovskite based solar cells. The CH3NH3PbI3 perovskite was deposited using the spray technique to achieve micrometer size perovskite crystals. The number of spray passes changes the CH3NH3PbI3 film thickness; for example, 10 spray passes achieved a film thickness of 3.4 μm of perovskite. Surprisingly, power conversion efficiency of 6.9% was demonstrated for this novel, simple solar cell structure with thick perovskite film that has no HTM. Capacitance-voltage measurements reveal charge accumulation at the CH3NH3PbI3/Au interface while the compact TiO2/CH3NH3PbI3 junction showed a space charge region, which inhibits the recombination. Studying these interfaces is key to understanding the operation mechanism of this unique solar cell structure. This simple planar HTM free perovskite solar cell demonstrates the potential to make large-scale solar cells while maintaining a simple, low-cost architecture. (Figure Presented).
AB - In this work we demonstrate the planar configuration on hole conductor (HTM) free perovskite based solar cells. The CH3NH3PbI3 perovskite was deposited using the spray technique to achieve micrometer size perovskite crystals. The number of spray passes changes the CH3NH3PbI3 film thickness; for example, 10 spray passes achieved a film thickness of 3.4 μm of perovskite. Surprisingly, power conversion efficiency of 6.9% was demonstrated for this novel, simple solar cell structure with thick perovskite film that has no HTM. Capacitance-voltage measurements reveal charge accumulation at the CH3NH3PbI3/Au interface while the compact TiO2/CH3NH3PbI3 junction showed a space charge region, which inhibits the recombination. Studying these interfaces is key to understanding the operation mechanism of this unique solar cell structure. This simple planar HTM free perovskite solar cell demonstrates the potential to make large-scale solar cells while maintaining a simple, low-cost architecture. (Figure Presented).
UR - http://www.scopus.com/inward/record.url?scp=84940538694&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b07554
DO - 10.1021/acs.jpcc.5b07554
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AN - SCOPUS:84940538694
SN - 1932-7447
VL - 119
SP - 19722
EP - 19728
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 34
ER -
