Author

Hyeji Han

2 papers indexed here

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Oct 2026

Surface Passivation Suppresses α-Particle-Induced Trap Formation in Perovskite Solar Cells for Space Applications

α-Particles represent the second most abundant ionic species in space radiation, yet their specific degradation mechanisms and mitigation strategies in perovskite solar cells (PSCs) remain unquantified. Here, we evaluate the degradation of PSCs under 2.5 MeV α-particle irradiation and investigate the protective role...

Da Seul Lee, H. W. Seo, Hyeji Han et al. · ACS Energy Letters · 0 citations

Open access Oct 2026

Chemical Functionality Engineering of Anti-Solvent Additives for Photostable Perovskite Solar Cells.

Metal-halide perovskite solar cells (PSCs) achieve high power-conversion efficiencies but remain susceptible to photo-induced degradation caused by mobile ions and phase segregation. Here, we investigate positional isomers of pyridine-carboxylic acid, namely pyridine-2-carboxylic acid (2-PC) and pyridine-4-carboxylic a...

Wonjong Lee, Muhammad Adnan, Zobia Irshad et al. · Small · 0 citations