Publications [#304383] of Jie Liu

Journal Articles

1. Freitag, M; Chen, J; Tersoff, J; Tsang, JC; Fu, Q; Liu, J; Avouris, P, Mobile ambipolar domain in carbon-nanotube infrared emitters., Physical review letters, vol. 93 no. 7 (August, 2004), pp. 076803 [doi]
   (last updated on 2026/01/16)

   Abstract:
   We spatially resolve the infrared light emission from ambipolar carbon-nanotube field-effect transistors with long-channel lengths. Electrons and holes are injected from opposite contacts into a single nanotube molecule. The ambipolar domain, where electron and hole currents overlap, forms a microscopic light emitter within the carbon nanotube. We can control its location by varying gate and drain voltages. At high electric fields, additional stationary spots appear due to defect-assisted Zener tunneling or impact ionization. The laterally resolved measurement provides valuable insight into the transistor behavior, complementary to electronic device characteristics.