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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Hexagonal Tungsten Oxides with Very Large Bandgaps Designed by a Chemical Substitution-Oriented Method

등록일
2020년 9월 7일 21시 25분 55초
접수번호
0881
발표코드
INOR.P-133 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 21일(수) 17:00~17:30
발표형식
포스터
발표분야
Inorganic Chemistry
저자 및
공동저자
Geonju Park, Kang Min Ok*
Department of Chemistry, Sogang University, Korea
New hexagonal tungsten oxide materials designed by a chemical substitution-oriented method have been successfully synthesized via hydrothermal reactions. Despite the stoichiometric equivalence, the reported materials crystallize in the centrosymmetric space group, R-3m and noncentrosymmetric space group, P63mc, respectively, depending on their counter cations. UV-vis diffuse reflectance spectroscopic analysis indicates that one of the reported materials exhibits the largest bandgap among all known phase-matchable nonlinear optical selenite compounds. Powder second-harmonic generation (SHG) measurements indicate the reported material reveals an SHG efficiency of ca. 1.1 times that of KDP and is type-I phase-matchable. A complete spectroscopic and thermal characterizations, calculations, and factors influencing the macroscopic centricity will be presented.

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