• 제목/요약/키워드: Physics

검색결과 14,454건 처리시간 0.038초

The effect of ion irradiation on magnetic thin films

  • Kim, I.S.;Sung, M.C.;You, D.G.;Park, H.S.;Kim, T.H.;Ye, W.T.;Kim, H.J.;Jung, Y.S.;Lee, J.C.;Yang, J.S.;Kim, T.G.;Song, J.H.;Jeong, K.;Lee, J.
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2001년도 창립10주년 제20회 학술발표회
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    • pp.214-214
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    • 2001

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Interfacial Electronic Structure of Bathocuproine and Al: Theoretical Study and Photoemission Spectroscopy

  • Lee, Jeihyun;Kim, Hyein;Shin, Dongguen;Lee, Younjoo;Park, Soohyung;Yoo, Jisu;Jeong, Junkyeong;Hyun, Gyeongho;Jeong, Kwangho;Yi, Yeonjin
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2014년도 제46회 동계 정기학술대회 초록집
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    • pp.169-169
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    • 2014

  • Interfacial electronic structure of bathocuproine and Al was investigated using in-situ photoemission spectroscopy and density functional theory (DFT) calculations. Bathocuproine is used for exciton blocking and electron transport material in organic photovoltaics and Al is typical cathode material. When thin thickness of Al was thermally evaporated on BCP, gap states were observed by ultraviolet photoemission spectroscopy. The closest gap state yielded below 0.3 eV from Fermi level. By x-ray photoemission spectroscopy, interaction of Al with nitrogen of BCP was observed. To understand the origin of gap states, DFT calculation was carried out and gap states was verified with successive calculation of interaction of Al and nitrogen of BCP. Furthermore, emergency of another state above Fermi level was observed. Remarkable reduction of electron injection barrier between Al and BCP, therefore, is possible.

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