Y
Yun Hee Chang
Researcher at KAIST
Publications - 26
Citations - 698
Yun Hee Chang is an academic researcher from KAIST. The author has contributed to research in topics: Scanning tunneling microscope & Engineering. The author has an hindex of 11, co-authored 21 publications receiving 597 citations. Previous affiliations of Yun Hee Chang include Korea Research Institute of Standards and Science & Pusan National University.
Papers
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Journal Article
First-Principles Study of the Structural and the Electronic Properties of the Lead-Halide-Based Inorganic-Organic perovskites (CH3NH3)PbX3 and CsPbX3 (X = Cl, Br, I)
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Intrinsic Photoluminescence Emission from Subdomained Graphene Quantum Dots.
Hyewon Yoon,Yun Hee Chang,Sung Ho Song,Eui-Sup Lee,Sung Hwan Jin,Chanae Park,Jinsup Lee,Bo Hyun Kim,Hee Jae Kang,Yong-Hyun Kim,Seokwoo Jeon +10 more
TL;DR: The photoluminescence (PL) origin of bright blue emission arising from intrinsic states in graphene quantum dots (GQDs) is investigated and is attributed to favorably formed subdomains composed of four to seven carbon hexagons.
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Optical properties and structural phase transitions of lead-halide based inorganic–organic 3D and 2D perovskite semiconductors under high pressure
TL;DR: In this paper, optical absorption, photoluminescence and Raman scattering of lead-halide based inorganic-organic perovskite semiconductors were measured under quasi-hydrostatic pressure at room temperature.
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Reflectance of conducting poly(3,4-ethylenedioxythiophene)
TL;DR: In this paper, the reflectance spectrum of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with PF6 with dc conductivity of 230 S/cm at room temperature, measured over a wide frequency range from 50 to 5×104 cm−1 (0.006-6 eV).
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Switching and Sensing Spin States of Co–Porphyrin in Bimolecular Reactions on Au(111) Using Scanning Tunneling Microscopy
TL;DR: It is demonstrated that spin states of Co-porphyrin on Au(111) can be reversibly switched over by binding and unbinding of the NO molecule and can be sensed using scanning tunneling microscopy and spectroscopy (STM and STS).