Organic Iso-type double-layer heterostructures based on pentacene, hexathiopentacene, and lead phthalocyanine

P. Lutsyk, Ya Vertsimakha

Research output: Contribution to journalArticle

Abstract

Photovoltaic properties of double-layer iso-type heterostructures based on pentacene, hexathiopentacene, and lead-phthalocyanine are studied. The heterostructures are prepared by thermal deposition on glass substrates at various substrate temperatures (T s ). Under modulated illumination, the sign reversal is observed in photovoltage spectra of pentacene/lead-phthalocyanine heterostructures deposited at T s = 300 K. The properties of these structures are well described by the van Opdorp model for inorganic iso-type heterojunctions. No sign reversal has been observed in pentacene/lead-phthalocyanine, pentacene/hexathiopentacene, and hexathiopentacene/lead-phthalocyanine heterostructures deposited at T s = 370 K, the magnitudes of photovoltage being higher than those in structures prepared at T s = 300 K.
Original languageEnglish
Pages (from-to)138-151
JournalMolecular Crystals and Liquid Crystals
Volume496
Issue number1
DOIs
Publication statusPublished - 2008

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