Jongwoo Ha

collaborators

2 papers

cond-mat.mtrl-sci2025

Controlling GaN nucleation via O $_{2}$ -plasma-perforated graphene masks on c-plane sapphire

Su Young An, Chinkyo Kim

Atomically thin, perforated graphene on $c$ -plane sapphire functions as a nanoscale mask that enables GaN growth through thru-holes. We tune the perforated-area fraction $f_{p}$ by c…

cond-mat.mtrl-sci2025

Scalable thru-hole epitaxy of GaN through self-adjusting $h$ -BN masks via solution-processed 2D stacks

Jongwoo Ha, Minah Choi, Jieun Yang +1

Selective epitaxy on 2D-material masks is a promising pathway for achieving localized, defect-suppressed GaN growth, but conventional 2D transfer processes limit scalability and in…

Controlling GaN nucleation via O2​-plasma-perforated graphene masks on c-plane sapphire

Scalable thru-hole epitaxy of GaN through self-adjusting h-BN masks via solution-processed 2D stacks

Controlling GaN nucleation via O $_{2}$ -plasma-perforated graphene masks on c-plane sapphire

Scalable thru-hole epitaxy of GaN through self-adjusting $h$ -BN masks via solution-processed 2D stacks