TY - JOUR
T1 - Toward metal-organic insulator-semiconductor solar cells, based on molecular monolayer self-assembly on n-Si
AU - Har-Lavan, Rotem
AU - Ron, Izhar
AU - Thieblemont, Florent
AU - Cahen, David
N1 - Funding Information:
We thank the Nancy and Stephen Grand Center for Sensors & Security, the Minerva Foundation (Munich), the NATO Science for Peace program, the German Israeli Cooperation in Energy Research, a research grant from Jack Halpern and 21 Ventures for partial support. R.H. and I.R. acknowledge partial support from the Feinberg Graduate School. We thank Gilad Gotesman for help with the Au NPs. F.T. thanks the French Embassy in Israel’s Scientific Office for partial support through the French Int’l. Volunteers Program. D.C. holds the Rowland and Sylvia Schaefer Chair in Energy Research.
PY - 2009/2/9
Y1 - 2009/2/9
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=59349092385&partnerID=8YFLogxK
U2 - 10.1063/1.3076115
DO - 10.1063/1.3076115
M3 - Article
AN - SCOPUS:59349092385
SN - 0003-6951
VL - 94
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 4
M1 - 043308
ER -