Optimization of the output efficiency of GaN nanowire piezoelectric nanogenerators by tuning the free carrier concentration

Chao Hung Wang, Wei Shun Liao, Zong Hong Lin, Nai Jen Ku, Yi Chang Li, Yen Chih Chen, Zhong Lin Wang, Chuan Pu Liu

Research output: Contribution to journalArticlepeer-review

77 Citations (Scopus)

Abstract

Carrier concentration in a piezoelectric semiconductor greatly affects alternating current (AC) piezoelectric nanogenerators (NGs) because of the carrier screening effect on the piezoelectric potential. The output performance of a series of NGs is investigated by tuning the Si dopant concentration in GaN nanowires. The results show a strong carrier screening effect that degrades output performance for high doping concentrations but results in high output power for low doping concentrations.

Original languageEnglish
JournalAdvanced Energy Materials
Volume4
Issue number16
DOIs
Publication statusPublished - 2014 Nov 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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