@inproceedings{0d9131d74f40468199746c7bce7fb8af,
title = "Characterizing enhanced performance of nanopatterned bulk heterojunction organic photovoltaics",
abstract = "We present experimental and theoretical studies of a nanopatterned photonic crystal formed between the bulk heterojunction blend, poly-3-hexylthiophene:[6, 6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) and nanocrystalline zinc oxide (nc-ZnO). The nanopattern is fabricated using the Pattern Replication in Non-wetting Templates (PRINT) technique. We summarize the fabrication method and show how it can be used to make a highly ordered hexagonal array of photovoltaic P3HT:PCBM posts. We also discuss theoretical studies of optical absorption for the nanopattern design that result in a 22\% enhancement over a conventional planar cell. Spectroscopic ellipsometry is also used to determine the optical constants of solar cell materials that are used in the optical model. Finally, we calculate the local exciton creation profile within the photoactive nanopattern to relate the nanostructured geometry to electrical performance.",
keywords = "Nanofabrication, Organic photovoltaics, Photonic crystals",
author = "Tumbleston, \{John R.\} and Ko, \{Doo Hyun\} and Rene Lopez and Samulski, \{Edward T.\}",
year = "2008",
doi = "10.1117/12.794823",
language = "English",
isbn = "9780819472670",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Nanoscale Photonic and Cell Technologies for Photovoltaics",
note = "Nanoscale Photonic and Cell Technologies for Photovoltaics ; Conference date: 11-08-2008 Through 13-08-2008",
}
