{"id":44,"date":"2024-04-09T23:43:50","date_gmt":"2024-04-09T14:43:50","guid":{"rendered":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/?page_id=44"},"modified":"2024-10-21T20:14:18","modified_gmt":"2024-10-21T11:14:18","slug":"researches","status":"publish","type":"page","link":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/researches\/","title":{"rendered":"Researches\/\u7814\u7a76\u5185\u5bb9"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u91cf\u5b50\u30c9\u30c3\u30c8\/Quantum dots<\/h2>\n\n\n\n

\u91cf\u5b50\u30c9\u30c3\u30c8\u306f\u5c0f\u3055\u306a\u534a\u5c0e\u4f53\u3067\u3059\u3002\u534a\u5c0e\u4f53\u3068\u805e\u304f\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u30c1\u30c3\u30d7\u304c\u982d\u306b\u6d6e\u304b\u3073\u307e\u3059\u304c\u3001\u305d\u306e\u4ed6\u306b\u3082\u592a\u967d\u96fb\u6c60\u3084\u5149\u89e6\u5a92\u306e\u6750\u6599\u3068\u3057\u3066\u793e\u4f1a\u3092\u652f\u3048\u3066\u3044\u307e\u3059\u3002\u534a\u5c0e\u4f53\u306f\u5149\u3092\u5438\u53ce\u3057\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u9ad8\u3044\u96fb\u5b50\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u672c\u6765\u3001\u6750\u6599\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u304c\u3001\u30ca\u30ce\u7c92\u5b50\u306e\u30b5\u30a4\u30ba\u306b\u3088\u3063\u3066\u3082\u5909\u5316\u3057\u3001\u3053\u306e\u73fe\u8c61\u306f\u300c\u91cf\u5b50\u30b5\u30a4\u30ba\u52b9\u679c\u300d\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3059\u3002Quantum dots are tiny semiconductors. When you hear the word \u201csemiconductor\u201d, you probably think of computer chips, but they also support our society as materials for solar cells and photocatalysts. Semiconductors absorb light and produce electrons with high energy. The magnitude of energy is basically determined by the material, but it also changes depending on the size of the nanoparticles. This phenomenon is called the \u201cquantum size effect\u201d.<\/p>\n\n\n\n

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\u91cf\u5b50\u30c9\u30c3\u30c8\u306e\u3082\u3046\u4e00\u3064\u306e\u5927\u304d\u306a\u7279\u5fb4\u304c\u3001\u767a\u5149\uff08\u86cd\u5149\uff09\u7279\u6027\u3067\u3059\u3002\u672c\u6765\u3001\u534a\u5c0e\u4f53\u306f\u7c21\u5358\u306b\u5149\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5316\u5b66\u7684\u624b\u6cd5\u3067\u30ca\u30ce\u7c92\u5b50\u5316\u3057\u3001\u8868\u9762\u3092\u7dba\u9e97\u306b\u6574\u3048\u308b\u3068\u3001\u5ba4\u6e29\u3067\u3068\u3066\u3082\u660e\u308b\u304f\u767a\u5149\u3057\u307e\u3059\u3002\u3068\u3066\u3082\u9bae\u3084\u304b\u306b\u767a\u5149\u3059\u308b\u305f\u3081\u3001\u6700\u8fd1\u306f\u8272\u518d\u73fe\u6027\u306b\u512a\u308c\u305f\u300c\u91cf\u5b50\u30c9\u30c3\u30c8\u30c6\u30ec\u30d3\u300d\u304c\u767a\u58f2\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u3001\u91cf\u5b50\u30c9\u30c3\u30c8\u958b\u767a\u306e\u6210\u679c\u3092\u79f0\u3048\u30012023\u5e74\u306b\u306fA. I. Ekimov\u535a\u58eb\u3001L. E. Brus\u535a\u58eb\u3001M. G. Bawendi\u535a\u58eb\u306b\u30ce\u30fc\u30d9\u30eb\u5316\u5b66\u8cde\u304c\u6388\u4e0e\u3055\u308c\u307e\u3057\u305f\u3002Another major characteristic of quantum dots is their luminescence properties. Although semiconductors do not naturally emit light, they emit light very brightly at room temperature when they are made into nanoparticles and their surfaces are well passivated. The vivid color of quantum dots enabled “quantum dot TV”. The Nobel Prize in Chemistry was awarded to Dr. A. I. Ekimov, Dr. L. E. Brus and Dr. M. G. Bawendi in 2023 for their early development of quantum dots.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u53e4\u3044\u30bf\u30a4\u30d7\u306e\u91cf\u5b50\u30c9\u30c3\u30c8\u306f\u6bd2\u6027\u306e\u5f37\u3044\u30ab\u30c9\u30df\u30a6\u30e0\u3084\u30bb\u30ec\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u793e\u4f1a\u306e\u3042\u3089\u3086\u308b\u5834\u9762\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u74b0\u5883\u306b\u914d\u616e\u3057\u305f\u91cf\u5b50\u30c9\u30c3\u30c8\u958b\u767a\u306b\u5411\u3051\u3001\u6211\u3005\u306e\u30b0\u30eb\u30fc\u30d7\u306f\u300c\u786b\u5316\u9280\u30a4\u30f3\u30b8\u30a6\u30e0\u300d\u3068\u3044\u3046\u65b0\u305f\u306a\u6750\u6599\u958b\u767a\u3092\u884c\u3044\u3001\u52b9\u7387\u306e\u3088\u3044\u5408\u6210\u7d4c\u8def\u306e\u958b\u767a\u3084\u3001\u9bae\u3084\u304b\u306a\u767a\u5149\u306b\u6210\u529f\u3057\u3066\u3044\u307e\u3059\u3002Conventional quantum dots use highly toxic cadmium and selenium. In order to develop environmentally friendly quantum dots that can be used in all aspects of society, our group has developed a new material based on \u201csilver indium sulfide\u201d. We have succeeded in developing an efficient synthesis route and in producing vivid luminescence from these new materials.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

\u91cf\u5b50\u30c9\u30c3\u30c8\/Quantum dots \u91cf\u5b50\u30c9\u30c3\u30c8\u306f\u5c0f\u3055\u306a\u534a\u5c0e\u4f53\u3067\u3059\u3002\u534a\u5c0e\u4f53\u3068\u805e\u304f\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u30c1\u30c3\u30d7\u304c\u982d\u306b\u6d6e\u304b\u3073\u307e\u3059\u304c\u3001\u305d\u306e\u4ed6\u306b\u3082\u592a\u967d\u96fb\u6c60\u3084\u5149\u89e6\u5a92\u306e\u6750\u6599\u3068\u3057\u3066\u793e\u4f1a\u3092\u652f\u3048\u3066\u3044\u307e\u3059\u3002\u534a\u5c0e\u4f53\u306f\u5149\u3092\u5438\u53ce\u3057\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u9ad8\u3044\u96fb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-44","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/pages\/44","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/comments?post=44"}],"version-history":[{"count":13,"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/pages\/44\/revisions"}],"predecessor-version":[{"id":148,"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/pages\/44\/revisions\/148"}],"wp:attachment":[{"href":"https:\/\/www-chem.eng.osaka-u.ac.jp\/apel\/wp-json\/wp\/v2\/media?parent=44"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}