Nanowires as Switches and Light Emitters in Flexible Displays
We have investigated the use of nanostructures for the development of flexible displays. The key issue is the robust embedding of nano-scale inorganic structures in a soft and flexible polymeric matrix. We show that nanowire field effect transistors can be embedded in polymer foil materials by using a low-temperature solution-based template technique for binary or multinary semiconductor compounds. In principle, the fabricated transistor structures can be used as driving and switching elements in flexible displays, even though, at the present development stage, their current capabilities and switching speeds are still insufficient. We also demonstrate effective LED operation in vertically oriented ZnO nanowires encapsulated in flexible polystyrene after deposition. The emission spectrum of these LED structures covers the near-ultraviolet and visible spectral regions. The ZnO nanowires are grown as free-standing structures, i. e. without a template at temperatures as low as 80℃. Homogeneous growth over areas up to 50 cm2 can be obtained on a variety of substrates including Si as well as various metallic .transparent or flexible substrates. The nanowires are encapsulated in an insulating polymer materal to fabricate light-emitting devices.
ZnO Nanowires Electroluminescence LED Feid emission Displays Flexible
R. K(o)nenkamp J. Chen R C. Word A. Nadarajah
Physics Department, Portland State University, Portland, OR, U.S.A. Hahn-Meitner Institut Berlin, Berlin, Germany
国际会议
上海
英文
119-122
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）