Publications

2024 (selected)

1. Chuanzhao Li, Mykola Telychko, Yue Zheng, Shurong Yuan, Zhenyue Wu, Walter P. D. Wong, Yixin Li, Yuanyuan Jin, Weng Fu Io, Xinyun Wang, Junhao Lin, Jianhua Hao, Cheng Han*, Kai Leng* "Switchable chiro-optical and spin texture in ferroelectric hybrid perovskite domains" Accepted, Nature Communication 2024.

2. Ibrahim Abdelwahab, Dushyant Kumar, Tieyuan Bian, Haining Zheng, Heng Gao, Fanrui Hu, Arthur McClelland, Kai Leng, William L Wilson, Jun Yin, Hyunsoo Yang, Kian Ping Loh "Two-dimensional chiral perovskites with large spin Hall angle and collinear spin Hall conductivit" Science 385, 311-317 (2024).

3. Zhenyue Wu, Kai Leng* "Harnessing Ion Migration in 2D Perovskites for Fabricating Diode Heterostructure" Matter 7 (8) 2649-2651 (2024).

4. Hwa Seob Choi#, Jun Lin#, Gang Wang#, Walter P.D. Wong, In-Hyeok Park, Fang Lin, Jun Yin*, Kai Leng*, Junhao Lin*, Kian Ping Loh* "Molecularly-thin, two-dimensional all-organic perovskites" Science 384, 60-66 (2024).

MIT Technology Review (China): https://www.mittrchina.com/news/detail/13176

Croucher Foundation coverage: Hong Kong researchers create 2D all-organic perovskites | Stories about Hong Kong science (croucher.org.hk)

2023 (selected)

1. Weixin He, Yali Yang, Chuanzhao Li, Walter PD Wong, Fanica Cimpoesu, Ana Maria Toader, Zhenyue Wu, Xiao Wu, Zexin Lin, Qing-hua Xu, Kai Leng*, Alessandro Stroppa* & Kian Ping Loh* "Near-90° Switch in the Polar Axis of Dion–Jacobson Perovskites by Halide Substitution" Journal of the American Chemical Society, 145, 25, 14044-14051 (2023).

2. Yuanyuan Jin, Jian Sun, Ling Zhang, Junqiang Yang, Yangwu Wu, Bingying You, Xiao Liu, Kai Leng* & Song Liu* "Controllable Oxidation of ZrS2 to Prepare High-κ, Single-crystal m-ZrO2 for Two-dimensional Electronics" Advanced Materials, https://doi.org/10.1002/adma.202212079 (2023).

2022 (selected)

1. Chuanzhao Li, Kian Ping Loh* & Kai Leng* "Organic-inorganic hybrid perovskites and their heterostructures" Matter, 5, (12), 4153-4169, (2022).

2. Yan Shao, Wei Gao, Hejin Yan, Runlai Li, Ibrahim Abdelwahab, Xiao Chi, Lukas Rogee, Lyuchao Zhuang, Wei Fu, Shu Ping Lau, Siu Fung Yu, Yongqing Cai*, Kian Ping Loh* & Kai Leng* "Unlocking surface octahedral tilt in two-dimensional

Ruddlesden-Popper perovskties" Nature Communications, 14, 411 (2022).

3. Tingting Yin*, Hejin Yan, Ibrahim Abdelwahab, Yulia Lekina, Xujie Lü, Wenge Yang, Handong Sun, Kai Leng, Yongqing Cai*, Ze Xiang Shen*, Kian Ping Loh* "Pressure driven rotational isomerism in 2D hybrid perovskites" Nature Communications, 13, 138 (2022).

4. Mykola Telychko#, Shayan Edalatmanesh#, Kai Leng#, Ibrahim Abdelwahab, Na Guo, Chu Zhang, Jesus I Mendieta-Moreno, Matyas Nachtigall, Jing Li, Kian Ping Loh*, Pavel Jelinek* & Jiong Lu* "Sub-angstrom Non-invasive Imaging of Atomic Arrangement in 2D Hybrid Perovskites" Science Advances, 8 (17), eabj0395 (2022).

5. Maoxin Li, Feier Fang, Xiao Huang, Guangyou Liu, Zheng Lai, Zhihao Chen, Jiahao Hong, Yu Chen, Rong-jia Wei, Guo-Hong Ning, Kai Leng*, Yumeng Shi* & Bingbing Tian* "Chiral Ligand-Induced Structural Transformation of Low-Dimensional Hybrid

Perovsktie for Circularly Polarized Photodetection" Chemistry of Materials. 34, 7, 2955-2962 (2022).

2021 (selected)

1. Kai Leng*, Runlai Li, Shu Ping Lau, Kian Ping Loh* "Ferroelectricity and Rashba effect in 2D organic–inorganic hybrid perovskites" Trends in Chemistry, 3, 716-732 (2021).

2. Alan Baldwin, Geraud Delport, Kai Leng, Rosemonde Chahbazian, Krzysztof Galkowski, Kian Ping Loh, Samuel D Stranks* "Local Energy Landscape Drives Long-Range Exciton Diffusion in Two-Dimensional Halide Perovskite Semiconductors" The Journal of Physical Chemistry Letters, 12, 4003-4011 (2021).

2020 and before (selected)

1. Kai Leng, Wei Fu, Yanpeng Liu, Manish Chhowalla & Kian Ping Loh* "From bulk to molecularly thin hybrid perovskites" Nature Reviews Materials, 5, 482-500 (2020).

2. Kai Leng, Lin Wang, Yan Shao, Ibrahim Abdelwahab, Gustavo Grinblat, Ivan Verzhbitskiy, Runlai Li, Yongqing Cai, Xiao Chi, Wei Fu, Peng Song, Andrivo Rusydi, Goki Eda, Stefan A. Maier & Kian Ping Loh* "Electron tunneling at molecularly thin 2D perovskite and graphene van der Waals interface" Nature Communications, 11, 5483 (2020).

3. Kai Leng, Ibrahim Abdelwahab, Ivan Verzhbitskiy, Mykola Telychko, Leiqiang Chu, Wei Fu, Xiao Chi, Na Guo, Zhihui Chen, Zhongxin Chen, Chun Zhang, Qing-Hua Xu, Jiong Lu, Manish Chhowalla, Goki Eda and Kian Ping Loh* "Molecularly thin two-dimensional hybrid perovskites with tunable optoelectronic properties due to reversible surface relaxation" Nature Materials, 17, 908-914 (2018).

4. Feng Zhou#, Ibrahim Abdelwahab#, Kai Leng#, Kian Ping Loh* & Wei Ji "2D Perovskites with Giant Excitonic Optical Nonlinearities for High-Performance Sub-Bandgap Photodetection" Advanced Materials, 31, 1904155 (2019).

5. Xiao Chi#, Kai Leng#, Bo Wu, Dong Shi, Yufong choy, Zhongxin Chen, Zhihui, Chen, Xiaojiang Yu, Ping Yang, Qing-Hua Xu, Tze Chien Sum, Andrivo Rusydi* & Kian Ping Loh* "Elucidating Surface and Bulk Emission in 3D Hybrid Organic-Inorganic Lead Bromide Perovskites" Advanced Optical Materials, 6, 1800470 (2018).

6. Zhongxin Chen#, Kai Leng#, Xiaoxu Zhao, Souradip Malkhandi, Wei Tang, Bingbing Tian, Lei Dong, Lirong Zheng, Ming Lin, Boon Siang Yeo, Kian Ping Loh* "Interface confined hydrogen evolution reaction in zero valent metal nanoparticles-intercalated molybdenum disulfide" Nature Communications, 8, 14548 (2017).

7. Kai Leng, Zhongxin Chen, Xiaoxu Zhao, Wei Tang, Bingbing Tian, Chang Tai Nai, Wu Zhou, Kian Ping Loh* "Phase Restructuring in Transition Metal Dichalcogenides for Highly Stable Energy Storage" ACS Nano, 10, 10, 9208-9215 (2016).

8. Bingbing Tian#, Wei Tang#, Kai Leng#, Zhongxin Chen, Sherman Jun Rong Tan, Chengxin Peng, Guo-Hong Ning, Wei Fu, Chenliang Su, Guangyuan Wesley Zheng, Kian Ping Loh* "Phase Transformations in TiS2 during K Intercalation" ACS Energy Letter, 2, 8, 1935-1840 (2017).

9. Kai Leng, Fan Zhang, Long Zhang, Tengfei Zhang, Yingpeng Wu, Yanhong Lu, Yi Huang, Yongsheng Chen* "Graphene-based Li-ion hybrid supercapacitors with ultrahigh performance" Nano Research, 6, 581-592 (2013).