Imprinted large-scale high density polymer nanopillars for organic solar cells
Imprinted large-scale high density polymer nanopillars for organic solar cells
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DOI：
10.1116/1.2981076
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发表时间：
2008-11-01
影响因子：
1.4
通讯作者：
Hu, Wenchuang (Walter)
中科院分区：
文献类型：
--
作者：
Aryal, Mukti;Buyukserin, Fatih;Hu, Wenchuang (Walter)
利用大规模纳米多孔硅模压印技术，在各种功能聚合物中制备高密度周期性纳米管柱(类似于10(10)/cm(2))。首次采用电化学阳极氧化法制备了氧化铝膜。该膜被用作两步等离子体刻蚀工艺的掩模，以获得50-80 nm宽、100-900 nm深的孔的硅模具。该模具用于纳米压印光刻，在SU-8、倍半硅氧烷、聚甲基丙烯酸甲酯、聚(3-己基硫)(P3HT)和苯基-C61-丁酸甲酯(PCBM)中制备有序和高密度的聚合物纳米管和纳米孔。然后，通过在柱子顶部沉积PCBM，将印记的P3HT纳米管用于体异质结太阳能电池。印迹提供了一种精确控制数字化异质结形态的方法，从而提高了太阳能电池的性能。
Nanoimprint with a large-scale nanoporous Si mold is developed to fabricate high density periodic nanopillars (similar to 10(10)/cm(2)) 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 50-80 nm wide and 100-900 nm 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.