Research
My research is centered on the fundamental and applied study of metal-halide perovskite materials for optoelectronic devices, particularly perovskite solar cells. A major objective of my work is to understand how crystallization behavior, local structural disorder, compositional heterogeneity, and interfacial properties influence the efficiency, reproducibility, and long-term stability of these materials. By focusing on these structure–property relationships, I aim to identify the key factors that limit device performance and to develop material and interface design strategies that overcome them.
To achieve these goals, I combine perovskite thin-film processing and device fabrication with advanced characterization techniques spanning structural, spectroscopic, and electronic analysis. My work involves methods such asX-ray diffraction (XRD) GIWAXS, X-ray absorption spectroscopy (XAS), photoelectron spectroscopy (XPS/UPS), optical spectroscopy, and photovoltaic device measurements to probe materials from the atomic and nanoscale level to full device operation.
Current research themes include interface engineering, defect passivation, local-structure analysis, and degradation mechanisms under illumination. Ultimately, my research seeks to bridge fundamental materials understanding with the development of more efficient, stable, and technologically relevant perovskite photovoltaic systems.
Published Papers
Z. Liang, Y. Zhang, H. Xu, W. Chen, B. Liu, J. Zhang, H. Zhang, Z. Wang, D.-H. Kang, J. Zeng, X. Gao, Q. Wang, H. Hu, H. Zhou, X. Cai, X. Tian, P. Reiss, B. Xu, T. Kirchartz, Z. Xiao, S. Dai, N.-G. Park, J. Ye, X. Pan, Nature 2023, 624 (7992), 557-563
D.-H. Kang, S.-U. Lee, N.-G. Park, ACS Energy Lett. 2023, 8 (5), 2122-2129
J.-H. Kim, D.-H. Kang, D.-N. Lee, N.-G. Park, J. Mater. Chem. A 2023, 11 (27), 15014-15021
D.-H. Kang, Y.-J. Park, Y.-S. Jeon, N.-G. Park, J. Energy Chem. 2022, 67, 549-554
C.-Ma, B. Kim, D.-H. Kang, S.-W. Kim, N.-G. Park, ACS Energy Lett. 2021, 6 (8), 2817-2824
D.-H. Kang, S.-G. Kim, Y.-C. Kim, I.-T. Han, H.-J. Jang, J.-Y. Lee, N.-G. Park, ACS Energy Lett. 2020, 5 (7), 2191-2199
S.-G. Kim, J. Chen, J.-Y. Seo, D.-H. Kang, N.-G. Park, ACS Appl. Mater. Interfaces 2018, 10 (30), 25372-25383
Conferences
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2025 MRS Fall Meeting & Exhibit, Boston, United States — Oral presentation
Oxidant Interface Engineering for Suppressing and Stabilizing Lead -
DFM 2025 Winter Workshop, Bormio, Italy — Poster presentation
Oxidant Interface Engineering for Suppressing and Stabilizing Lead Iodide in FAPbI3 Perovskite Solar Cells -
DFM 2024 Winter Workshop, Bormio, Italy — Oral presentation
Local Structure Analysis on Defect Passivated Halide Perovskite Photovoltaic Materials and Devices -
PIRCC Workshop 2023, Kyoto, Japan — Oral presentation
Correlation between Perovskite Local Structure and Phase Stability Studied by EXAFS -
2022 MRS Fall Meeting & Exhibit, Boston, United States — Oral presentation
Effect of Residual Chloride in FAPbI3 Film on Phase Stability and Photovoltaic Performance of Perovskite Solar Cell -
NANO KOREA 2021, Ilsan, Korea — Oral presentation
Iodine-bearing passivation agent improves photovoltaic performance of perovskite solar cells -
6th SKKU-HUST Bilateral Graduate Student Workshop and Annual Academic Conference, Online — Oral presentation
Advanced Post-Treatment Method for Efficient Surface Passivation of Perovskite Films with a Minimal Dose -
NCC 2021, Gwangju, Gyeonggi, Korea — Poster presentation
Additive Engineering for Stable and High Efficient Perovskite Solar Cells Over 22% Efficiency -
PVSEC-30 & GPVC 2020, Jeju, Korea — Oral presentation
Novel Post-Treatment Approach for Better Stability and Efficiency in Perovskite Solar Cells