2023/05/18
An article about the angle-resolved inverse photoelectron spectroscopy appeared in Rev. Sci. Instrum. and selected as Editor's Pick!
10年がかりで開発した「角度分解低エネルギー逆光電子分光」の装置についての論文がReview of Scientific Instruments誌に掲載され、Editor‘s Pickに選ばれました。米国物理学協会（American Institute of Physics)発行で、実験装置についての最も権威のある(権威的な)雑誌です。
装置開発は、地味で根気のいる仕事です。開発に携わった大学院生、樫本君、出田君、佐藤君、折尾君、川村君が共著です。
千葉大学のレポジトリで無料で読めます。https://opac.ll.chiba-u.jp/da/curator/900121756/
A paper on the angle-resolved low-energy inverse photoelectron spectroscopy apparatus has been published in the Review of Scientific Instruments(1) and was selected as an Editor's Pick. The paper was co-authored by Mr. Kashimoto, Mr. Ideta, Mr. Sato, Mr. Orio, and Mr. Kawamura, graduate students who were involved in the development.
The paper can be read free of charge in the Chiba University repository. https://opac.ll.chiba-u.jp/da/curator/900121756/
2022/09/01
Electron affinities of small-molecule organic semiconductors: Comparison among cyclic voltammetry, conventional inverse photoelectron spectroscopy, and low-energy inverse photoelectron spectroscopy
有機半導体について、低エネルギー逆光電子分光で求めた電子親和力とサイクリックボルタンメトリーで求めた還元電位の関係を明らかにする論文がOrganic Electronics誌に掲載されました。
A paper on organic semiconductors that reveals the relationship between electron affinity determined by low-energy inverse photoemission spectroscopy and reduction potential determined by cyclic voltammetry has been published in Organic Electronics.
2022/07/26
High Density Conjugate Youth Association (Online)
○佐藤晴輝「有機半導体のLUMOバンド構造の実測とポーラロン形成の実証」【国内学会・口頭講演】
○Haruki Sato, "Actual Measurement of LUMO Band Structure of Organic Semiconductors and Demonstration of Polaron Formation" [Domestic Conference, Oral Presentation].
2022/07/19
Substantial step toward improving the performance of underdeveloped N-type organic semiconductors
有機半導体の電子伝導特性の解明に不可欠となる伝導帯のエネルギーバンド構造を世界で初めて観測することに成功しました。研究チームは、10年がかりで角度分解低エネルギー逆光電子分光法を開発し、ペンタセンという有機半導体の伝導帯を測定しました。その結果、流れる電子が有機半導体の分子を変形させてポーラロンが形成されるため、電子が流れにくくなることが分かりました。
The energy band structure of the conduction band, which is essential for clarifying the electronic conduction properties of organic semiconductors, has been successfully observed for the first time in the world. The research team developed angle-resolved low-energy inverse photoemission spectroscopy over a period of 10 years to measure the conduction band of an organic semiconductor called pentacene. As a result, they found that flowing electrons deform the molecules of the organic semiconductor to form polarons, which make it difficult for electrons to flow.
2022/07/04
The 3rd Optical Function Workshop (Online)
○吉田弘幸「角度分解低エネルギー逆光電子分光の開発と有機半導体の伝導帯測定とポーラロン形成」【国内学会・招待講演】
○Hiroyuki Yoshida, "Development of angle-resolved low-energy inverse photoemission spectroscopy and measurement of conduction bands and formation of polarons in organic semiconductors" [Domestic conference, invited lecture].
2022/06/29
○H. Yoshida, S. Fukushima, “Electron injection and collection barriers at organic/metal interface” 【国際学会・招待講演】
2022/06/24
Joint Study Group on Organic Materials Development and Evaluation of Organic Thin Films (Institute of Scientific and Industrial Research, Osaka University)
○吉田弘幸「有機半導体のLUMOバンド構造の実測と伝導機構の解明」【国内学会・招待講演】
Hiroyuki Yoshida, "Measurement of LUMO Band Structure of Organic Semiconductors and Elucidation of Conduction Mechanism" [Invited talk]. and Elucidation of Conduction Mechanism" [Domestic Conference, Invited Lecture] (in Japanese)
2022/06/23
JST Future Society Creation Project Full Research Kickoff Symposium
「SnからなるPbフリーペロブスカイト太陽電池の開発」（京都大学化学研究所）
○吉田弘幸「電子分光で調べるペロブスカイトの表面・界面構造
Development of Pb-free perovskite solar cells composed of Sn" (Institute for Chemical Research, Kyoto University)
○Hiroyuki Yoshida, "Surface and Interface Structures of Perovskites Studied by Electron Spectroscopy
2022/06/20
Applied Physics Society M&BE June Study Group "Forefront of Organic Molecules and Bioelectronics Research" (AIST Rinkai Fukutoshin Center)
○吉田弘幸「有機半導体のLUMOバンド構造の実測と伝導機構の解明」【国内学会・招待講演】
○Hiroyuki Yoshida, "Actual Measurement of LUMO Band Structure of Organic Semiconductors and Elucidation of Conduction Mechanism" [Domestic Conference, Invited Lecture].
2022/06/01
○H. Yoshida, A. Mirzehmet, “Surface/interface structures of perovskite films as studied by electron spectroscopies”【国際学会・口頭講演】
2022/05/25
11th Dynamic Exciton Seminar (Online)
○吉田弘幸「分子四重極と有機薄膜太陽電池の電荷分離」【国内学会・招待】
○Hiroyuki Yoshida, "Molecular Quadrupole and Charge Separation of Organic Thin Film Solar Cells" [Domestic Conference, Invited].
