Buffer‐Free Inverted Photovoltaic Cells with Hybrid C60/CuI Heterojunction

Thin‐film photovoltaic cells with a planar inorganic‐on‐organic junction are fabricated and tested. Organic n‐type semiconductor is fullerene C60, the inorganic p‐type semiconductor is cuprous iodide CuI. Two types of substrate (glass/ITO or PET/ITO) and top electrodes (MAM or gold, where MAM is an...

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Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2018-09, Vol.215 (18), p.n/a
Main Authors: Travkin, Vlad V., Elizarov, Ilya D., Pakhomov, Georgy L.
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Buffers
Cuprous iodide
fill‐factor
Fullerenes
Glass substrates
Gold
Heterojunctions
hybrid devices
Photovoltaic cells
photovoltaics
planar heterojunction
Silver
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Summary:Thin‐film photovoltaic cells with a planar inorganic‐on‐organic junction are fabricated and tested. Organic n‐type semiconductor is fullerene C60, the inorganic p‐type semiconductor is cuprous iodide CuI. Two types of substrate (glass/ITO or PET/ITO) and top electrodes (MAM or gold, where MAM is an MoOx/Ag/MoOx composite) are used. Depending on composition, the devices with a C60/CuI hybrid heterojunction exhibit several interesting features like optical transparency, high rectification in the dark, and high fill‐factor under illumination, provided they have no buffer or interfacial layers typically contained in photovoltaic cells. A hybrid flat heterojunction “n‐C60/p‐CuI” (inorganic‐on‐organic) is introduced. The inverted semitransparent photovoltaic cells incorporating this heterojunction are fabricated entirely by the thermal evaporation. Their photoelectrical characteristics are analyzed depending on the substrate (glass or PET), top anode (MAM or Au), and functional interlayers.
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.201800329