Photoenhanced electrochemical etching for p-GaN

  • Jeon Wook Yang
  • , Byung Mok Kim
  • , Chang Joo Yoon
  • , Gye Mo Yang
  • , Hyung-Jae Lee Hyung-Jae

Research output: Contribution to journalJournal articlepeer-review

Abstract

An effective wet chemical etching method for p-GaN is proposed based on the surface band bending of the semiconductor. The metal organic chemical vapour deposition (MOCVD) grown p-GaN was successfully etched by biasing the substrate below -3 V during photoenhanced electrochemical etching using KOH solution and Hg lamp illumination. The etch rate increased with increasing negative voltage and was as high as 2.1 μm/min at -10 V.

Original languageEnglish
Pages (from-to)88-90
Number of pages3
JournalElectronics Letters
Volume36
Issue number1
DOIs
StatePublished - 2000.01.6

Quacquarelli Symonds(QS) Subject Topics

  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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