연구실소개

김도형 교수

Our research group focuses on exploring and enhancing various functional properties such as ferroelectricity, charge carrier transport, and photo-induced dynamics in optoelectronic and photovoltaic materials. In particular, we are designing appropriate hybrid perovskite compositions and exploring suitable applications including semiconductors, photovoltaics, optoelectronics, and even sensors. Research interests include hybrid perovskite synthesis and nanoscale properties via scanning probe microscopy (SPM) techniques. Such nanoscale characterizations allow us to explore charge carrier transport, interface, and defect dynamics in hybrid perovskites at the nanoscale. Furthermore, we expect that various advanced characterization techniques will provide deeper insights into improving the performance of advanced materials. Consequently, we aim to develop next-generation optoelectronics and photovoltaics.

구성원

• Advisor 김도형

주요연구분야

주요업적

• 1. Dohyung Kim†, Jae S. Yun†*, Arun Sagotra, Alessandro Mattoni, Pankaj Sharma, Jincheol Kim, Dasuel Lee, Sean Lim, Padraic O’Reilly, Liz Brinkman, Martin A. Green, Shujuan Huang, Anita Ho-Baillie, Claudio Cazorla, and Jan Seidel*, “Charge carrier transport properties of twin domains in halide perovskites”, Journal of Materials Chemistry A 11 16743-16745 (2023)

• 2. Dohyung Kim, Anton V. Ievlev, Olga S. Ovchinnikova, Sergei V. Kalinin, Mahshid Ahmadi*, “Light-ferroelectricity interaction in two-dimensional lead iodide perovskites”, Journal of Materials Chemistry A 10, 10120-10131 (2022)

• 3. Dohyung Kim†, Jihoo Lim†, Seungmin Lee†, Arman Mahboubi Soufiani*, Eunyoung Choi, Anton V. Ievlev, Nikolay Borodinov, Yongtao Liu, Olga S. Ovchinnikova, Mahshid Ahmadi, Sean Lim, Pankaj Sharma, Jan Seidel, Jun Hong Noh* and Jae Sung Yun*, Microstructural evaluation of phase instability in large bandgap FAPbIxMAPbBr1-x perovskites, ACS Nano 15 (12) 20391-20402 (2021).

• 4. Yurou Zhang†, Dohyung Kim†, Jung Ho Yun*, Jongchul Lim, Min-Cherl Jung, Xiaoming Wen, Jan Seidel, Eunyoung Choi, Mu Xiao, Tengfei Qiu, Miaoqiang Lyu, EQ Han, Mehri Ghasemi, Sean Lim, Henry J Snaith, Jae Sung Yun*, and Lianzhou Wang*, Charge carrier mobility enhancement via self-assembled perovskite nano-island on MAPbI3 cuboid single crystal surfaces, Advanced Functional Materials 50 (31) 2105542 (2021).

• 5. Dohyung Kim, Yongato Liu, Anton V. Ievlev, Kate Higgins, Olga S. Ovchinnikova, Sergei V. Kalinin, and Mahshid Ahmadi*, Unraveling hysteretic behavior at the metal halide perovskite – metal interfaces, Nano Energy 89 106428 (2021)

• 6. Dohyung Kim, Eric S. Muckley, Nicole Creange, Ting Hei Wan, Myung Hyun Ann, Emanuel Quattrocchi, Rama K. Vasudevan, Jong H. Kim, Francesco Giucci, Ilia N. Ivanov, Sergei V. Kalinin, Mahshid Ahmadi*, Exploring transport behavior in hybrid perovskites solar cells via machine learning analysis of environmental-dependent impedance spectroscopy, Advanced Science 2002510, (2021).

• 7. Dohyung Kim†, Jae Sung Yun†, Pankaj Sharma, Da Seul Lee, Jincheol Kim, Arman Mahboubi Soufiani, Shujuan Huang, Martin Green, Anita Ho-Baillie*, Jan Seidel*, Light-and Bias-Induced Structural Variations in Metal Halide Perovskites, Nature Communications 10 444 (2019)