Effect of hole-transporting materials on the photovoltaic performance and stability of all-ambient-processed perovskite solar cells

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Islavath, NanajiCentre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)

Effect of hole-transporting materials on the photovoltaic performance and stability of all-ambient-processed perovskite solar cells

Artikel/kapitelEngelska2017

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Elsevier BV,2017
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LIBRIS-ID:oai:DiVA.org:hv-12002
https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-12002URI
https://doi.org/10.1016/j.jechem.2016.12.011DOI

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Språk:engelska
Sammanfattning på:engelska

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High-efficiency perovskite solar cells (PSCs) reported hitherto have been mostly prepared in a moisture and oxygen-free glove-box atmosphere, which hampers upscaling and real-time performance assessment of this exciting photovoltaic technology. In this work, we have systematically studied the feasibility of all-ambient-processing of PSCs and evaluated their photovoltaic performance. It has been shown that phase-pure crystalline tetragonal MAPbI3 perovskite films are instantly formed in ambient air at room temperature by a two-step spin coating process, undermining the need for dry atmosphere and post-annealing. All-ambient-processed PSCs with a configuration of FTO/TiO2/MAPbI3/Spiro-OMeTAD/Au achieve open-circuit voltage (990 mV) and short-circuit current density (20.31 mA/cm2) comparable to those of best reported glove-box processed devices. Nevertheless, device power conversion efficiency is still constrained at 5% by the unusually low fill-factor of 0.25. Dark current–voltage characteristics reveal poor conductivity of hole-transporting layer caused by lack of oxidized spiro-OMeTAD species, resulting in high series-resistance and decreased fill-factor. The study also establishes that the above limitations can be readily overcome by employing an inorganic p-type semiconductor, copper thiocyanate, as ambient-processable hole-transporting layer to yield a fill-factor of 0.54 and a power conversion efficiency of 7.19%. The present findings can have important implications in industrially viable fabrication of large-area PSCs.The poor conductivity of ambient-processed spiro-OMeTAD HTM layer caused by lack of oxidation is identified as a major performance limiting factor and successfully overcome by replacing with stable inorganic CuSCN.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Materialteknik Bearbetnings-, yt- och fogningsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Manufacturing, Surface and Joining Technology hsv//eng
Perovskite
Ambient processing
Solar cell
Hole transport
Series resistance
Production Technology
Produktionsteknik
Manufacturing and materials engineering
Produktions- och materialteknik

Biuppslag (personer, institutioner, konferenser, titlar ...)

Saroja, S.Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)
Reddy, K SrinivasCentre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)
Harikesh, P.C.Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)
Veerappan, G.Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)
Joshi, Shrikant V.,1960-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India,PTW(Swepub:hv)shrjos (författare)
Ramasamy, EaswaramoorthiCentre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, India (författare)
Centre for Solar Energy Materials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad 500005, IndiaAvdelningen för avverkande och additativa tillverkningsprocesser (AAT) (creator_code:org_t)

Sammanhörande titlar

Ingår i:Journal of Energy Chemistry: Elsevier BV26:3, s. 584-5912095-49562096-885X

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