Kangyu Ji 季康煜

PUBLICATIONS

Papers & preprints

Imaging, machine learning, and materials research.

01 / RESEARCH AREA

Machine learning & scientific discovery

Self-supervised and multimodal learning, interpretable models, and hypothesis-driven experiments.

Figure 1 schematic connecting a chemical database, language-model hypotheses, experiments, and design rules
Ji, K. et al. (2025). A closed-loop AI framework for hypothesis-driven and interpretable materials design. arXiv:2509.18604, Fig. 1

02 / RESEARCH AREA

Optical imaging & characterization

Multidimensional imaging, spectroscopy, and the local structure–property relationships of materials.

Figure 1 schematic and maps of high-throughput hyperspectral bandgap measurements
Sheng, F. et al. (2025). High-throughput micro-scale bandgap mapping for perovskite-inspired materials with complex composition space. Nature Communications 16, 7477, Fig. 1

03 / RESEARCH AREA

Light-emitting materials & devices

Perovskite emitters, nanocrystals, and LED efficiency, colour, stability, and miniaturization.

Figure 1 showing fabrication stages and micrographs of micro- and nano-perovskite LEDs
Lian, Y. et al. (2025). Downscaling micro- and nano-perovskite LEDs. Nature 640, 62–68, Fig. 1

04 / RESEARCH AREA

Solar cells & interface engineering

Photovoltaic performance, charge transport, interfaces, and operational stability.

Figure 1 comparing ordered and amorphous self-assembled molecular layers at solar-cell interfaces
Wang, X. et al. (2024). Regulating phase homogeneity by self-assembled molecules for enhanced efficiency and stability of inverted perovskite solar cells. Nature Photonics 18, 1269–1275, Fig. 1

05 / RESEARCH AREA

Functional materials & energy storage

Semiconductor transport and materials for electrochemical energy storage.

Figure 1 comparing conjugated polymer structures, absorption spectra, and energetic disorder
Xiao, M. et al. (2023). Achieving ideal transistor characteristics in conjugated polymer semiconductors. Science Advances 9, eadg8659, Fig. 1