Efficient organic-inorganic hybrid perovskite solar cells processed in air

Organic-inorganic hybrid perovskite solar cells with fluorine doped tin oxide/titanium dioxide/CH 3 NH 3 PbI 3− x Cl x /poly(3-hexylthiophene)/silver were made in air with more than 50% humidity. The best devices showed an open circuit voltage of 640 mV, a short circuit current density of 18.85 mA c...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2014-01, Vol.16 (45), p.24691-24696
Main Authors: Seetharaman S, Madhu, Nagarjuna, Puvvala, Kumar, P. Naresh, Singh, Surya Prakash, Deepa, Melepurath, Namboothiry, Manoj A. G
Format: Article
Language:English
Subjects:
Density
Devices
Fluorine
Open circuit voltage
Perovskites
Photovoltaic cells
Silver
Solar cells
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Summary:Organic-inorganic hybrid perovskite solar cells with fluorine doped tin oxide/titanium dioxide/CH 3 NH 3 PbI 3− x Cl x /poly(3-hexylthiophene)/silver were made in air with more than 50% humidity. The best devices showed an open circuit voltage of 640 mV, a short circuit current density of 18.85 mA cm −2 , a fill factor of 0.407 and a power conversion efficiency of 5.67%. The devices showed external quantum efficiency varying from 60 to 80% over a wavelength region of 350 nm to 750 nm of the solar spectrum. The morphology of the perovskite was investigated using scanning electron microscopy and it was found to be porous in nature. This study provides insights into air-stability of perovskite solar cells. Organic-inorganic hybrid perovskite solar cells based on CH 3 NH 3 PbI 3− x Cl x and undoped poly(3-hexyl thiophene) as the hole transporting layers fabricated under ambient air conditions by solution processing.
ISSN:1463-9076
1463-9084
DOI:10.1039/c4cp03726j