Miss. Chih-Yun(Eva) Chou

Ph.D. candidate

National Taiwan University

Eva’s research centers on developing sustainable thin film materials for next-generation
optoelectronic and energy devices, with a focus on atmospheric pressure plasma jet
(APPJ) systems. APPJ is an emerging single-step, cost-effective, and vacuum-free
deposition method for transparent electrodes, enabling scalable manufacturing under
ambient conditions while achieving performance comparable to commercial indium tin
oxide (ITO).
Her recent studies focus on gallium-doped zinc oxide (GZO) thin films fabricated by
APPJ. She addressed a long-standing knowledge gap by comparing the effectiveness of
gallium and aluminum as dopants in APPJ-grown ZnO films. Through advanced TEM
and EDS analyses, she demonstrated that Ga incorporates more effectively than Al,
resulting in superior electrical properties for GZO. This work provides new insights
into material selection for APPJ processing and offers a promising alternative to
conventional ITO electrodes.

Beyond fundamental studies, Eva is passionate about applying her research to real-
world challenges. She developed flexible transparent electrodes by integrating GZO

with silver nanowire networks, achieving excellent mechanical durability. After 4000
bending cycles, the sheet resistance increased by only 3.8%, compared to 11% for ITO.
These results demonstrate the robustness and scalability of APPJ-fabricated electrodes
for flexible photovoltaics and wearable electronics.
Through her interdisciplinary approach, Eva combines thin film engineering, materials
characterization, and device applications to advance green energy technologies. Her
vision is to pioneer sustainable plasma-based manufacturing routes for transparent
electrodes, contributing to the global shift toward renewable energy and resilient
electronics.