Toward metal-organic insulator-semiconductor solar cells, based on molecular monolayer self-assembly on n-Si

Autor:	David Cahen, Rotem Har-Lavan, Florent Thieblemont, Izhar Ron
Rok vydání:	2009
Předmět:	chemistry.chemical_classification Physics and Astronomy (miscellaneous) business.industry Molecular electronics Nanotechnology Photochemistry Semiconductor chemistry Chemical bond Monolayer Molecule Self-assembly Electroplating business Alkyl
Zdroj:	Applied Physics Letters. 94:043308
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.3076115
Popis:	Alkyl chain molecules on n-Si were used to test the concept of hybrid metal-organic insulator-semiconductor (MOIS) solar cells. Test structures were made by binding alkyl chain molecules via Si–O–C bonds to oxide-free n-Si surfaces, using self-assembly. With thiol groups at the terminals away from the Si, binding of Au nanoparticles, followed by electroless Au plating yields semitransparent top contacts. First cells give, under 25 mW/cm2 white light illumination, open-circuit voltage Voc=0.48 V and fill factor FF=0.58. Because with sulfur termination the molecules have a dipole that limits inversion of the Si, we also used methyl-terminated monolayers. Even though then we can work, at this point, only with a Hg top contact, without chemical bond to the molecules, we get, using only radiation (∼AM 1.5) collected around the contact, the expected higher Voc=0.54 V, and respectable 0.8 FF, justifying further MOIS cell development.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::60bd003b3de598ac7827ed604363c657 https://doi.org/10.1063/1.3076115 Zobrazit plný text záznamu