The theoretical direct-band-gap optical gain of Germanium nanowires

• Main Authors: Xiong, Wen, Wang, Jian-Wei, Fan, Weijun, Song, Zhigang, Tan, Chuan Seng
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Materials; Materials Science; Nanoscale Materials
• Online Access: https://hdl.handle.net/10356/143726
• Institution: Nanyang Technological University

We calculate the electronic structures of Germanium nanowires by taking the effective-mass theory. The electron and hole states at the Γ-valley are studied via the eight-band k.p theory. For the [111] L-valley, we expand the envelope wave function using Bessel functions to calculate the energies of...