title: Semiconductor nanocrystals photosensitize C60 crystals.
abstract: Semiconductor nanocrystals (SCNCs) made of CdSe, CdTe, and InP are used to photosensitize needlelike C(60) crystals. The photocurrent is increased by up to 3 orders of magnitude as compared with C(60) crystals without SCNCs. The photocurrent spectrum can be tuned precisely by the SCNC size and material, rendering the SCNC-functionalized C(60) crystals an excellent material for spectrally tuneable photodetectors. We explain the increased photocurrent as a result of photoexcited electrons transferring from the SCNCs to the C(60) crystals and causing photoconductivity, while the complementary holes remain trapped in the SCNCs.
authors.affiliation: Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximilians-Universität München, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Biebersdorf
authors.forename: Roland
authors.initials: R
authors.lastname: Dietmüller
authors.forename: Andrei S
authors.initials: AS
authors.lastname: Susha
authors.forename: Andrey L
authors.initials: AL
authors.lastname: Rogach
authors.forename: Sergey K
authors.initials: SK
authors.lastname: Poznyak
authors.forename: Dmitri V
authors.initials: DV
authors.lastname: Talapin
authors.forename: Horst
authors.initials: H
authors.lastname: Weller
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Klar
authors.forename: Jochen
authors.initials: J
authors.lastname: Feldmann
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry; D037741:Fullerenes / Q000737:chemistry*; D007204:Indium / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry; D010777:Photochemistry; D018036:Selenium Compounds / Q000737:chemistry; D012666:Semiconductors; D013691:Tellurium / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D037741:Fullerenes; D010720:Phosphines; D018036:Selenium Compounds; D007204:Indium; C058667:cadmium selenide; C069837:fullerene C60; D013691:Tellurium; C090882:indium phosphide; C028337:cadmium telluride