Imprinted large-scale high density polymer nanopillars for organic solar cells
Abstract
Nanoimprint with a large-scale nanoporous Si mold is developed to fabricate high density periodic nanopillars (∼1010∕cm2) in various functional polymers. A anodic alumina membrane is first obtained using electrochemical anodization. The membrane is used as a mask for a two-step plasma etching process to obtain a Si mold of 50–80nm wide and 100–900nm deep pores. The mold is used in nanoimprint lithography to fabricate ordered and high density polymer nanopillars and nanopores in SU-8, hydrogen silsesquixane, polymethylmethacrylate, poly(3-hexylthiophane) (P3HT), and phenyl-C61-butyric acid methyl ester (PCBM). Then, the imprinted P3HT nanopillars were used to make bulk heterojunction solar cells by depositing PCBM on top of the pillars. Imprinting provides a way to precisely control the interdigitized heterojunction morphology, leading to improved solar cell performance.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 01, 2008
- Source ID
- 10.1116/1.2981076
Entities
People
- Anvar A. Zakhidov
- Fatih Buyukserin
- Jinming Gao
- Kamil Mielczarek
- Mukti Aryal
- Wenchuang (walter) Hu
- Xiao-mei Zhao
Organizations
- Air Force Office of Scientific Research
- University of Texas at Dallas