David Hwang

· Associate Professor, Ph.D., 2005, University of California at Berkeley

Stony Brook University · Mechanical Engineering

Active 1998–2026

h-index23

Citations1.8k

Papers17123 last 5y

Funding—

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About

David Hwang is an Associate Professor in the Department of Mechanical Engineering at Stony Brook University. He earned his Ph.D. from the University of California at Berkeley in 2005. His research focuses on micro and nanoscale heat transfer, laser-assisted solar photovoltaic manufacturing and diagnostics, and advanced diagnostics of light-matter interaction. His work involves exploring the fundamental mechanisms of heat transfer at small scales and developing innovative techniques for manufacturing and diagnostics in solar energy and photonics applications.

Research topics

Optoelectronics
Nanotechnology
Materials science
Condensed matter physics
Physics
Chemistry
Composite material
Optics

Selected publications

Optoelectronics of Multijunction Heterostructures of Transition Metal Dichalcogenides
Nano Letters · 2020 · 39 citations
induces more electron-hole pair generation.
Publisher DOI
Glass surface micromachining with simultaneous nanomaterial deposition by picosecond laser for wettability control
Applied Surface Science · 2021 · 24 citations
Senior authorCorresponding
Publisher OA PDF DOI
Enhanced Mechanical Stability of CIGS Solar Module with Glass/Polyimide/Indium Tin Oxide for Potentially Flexible Applications
ACS Applied Energy Materials · 2023-03-23 · 18 citations
articleCorresponding
Cu(In,Ga)Se2 (CIGS) is a promising candidate for flexible photovoltaics because of its outstanding efficiency and flexibility. Despite its advantages, achieving high-efficiency CIGS solar cells on a flexible polyimide (PI) substrate is challenging as it requires a low-temperature process and relaxation of the thermal expansion. This limitation is critical in CIGS modules, particularly for monolithic interconnection processes by laser scribing. Furthermore, Mo back-contact (BC)-based PI cells are…
Publisher DOI
Nanosecond laser scribing for see‐through CIGS thin film solar cells
Progress in Photovoltaics Research and Applications · 2019-12-05 · 16 citations
articleOpen accessSenior authorCorresponding
Abstract Building‐integrated photovoltaic (BIPV), especially in a semitransparent and/or see‐through configuration, has attracted significant attention because of the extended surfaces available for the photovoltaic (PV) installation including roofs, facades, and windows. In this study, we examine the P4 scribing process for fabricating see‐through cells on a new Cu (In,Ga)Se 2 (CIGS) architecture with indium tin oxide (ITO) bottom contact, using a nanosecond laser beam of 532‐nm wavelength illu…
Publisher OA PDF DOI
Laser Scribing for Perovskite Solar Modules of Long‐Term Stability
Solar RRL · 2024-03-26 · 14 citations
articleOpen accessCorresponding
Although the efficiency of hybrid lead‐halide perovskite solar cells has been significantly improved, the efficiency gap between small‐area cells and large modules continues to be a considerable challenge. Laser scribing is essential for realizing high‐quality monolithic connections; however, the laser‐induced material changes and their correlation with device performance have not been yet well understood, in particular for the perovskite material systems. In this study, the effect of P3 laser p…
Publisher OA PDF DOI

Frequent coauthors

Costas P. Grigoropoulos
University of California, Berkeley
83 shared
Seungkuk Kuk
Samsung (South Korea)
33 shared
Robert Horton
Sandia National Laboratories California
26 shared
Sang‐Gil Ryu
University of California, Berkeley
25 shared
Andrew M. Minor
University of California, Berkeley
25 shared
Eunpa Kim
Samsung (South Korea)
22 shared
Jeung‐hyun Jeong
Korea Institute of Science and Technology
21 shared
Nipun Misra
18 shared

Education

Ph.D., Mechanical Engineering
Stony Brook University
2005
M.S., Mechanical Engineering
Stony Brook University
2002
B.S., Mechanical Engineering
Stony Brook University
2000

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