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http://dx.doi.org/10.5757/vacmag.2.2.4

In situ photoemission and inverse photoemission studies on the interfacial electronic structures of organic materials  

Yi, Yeonjin (연세대학교 물리학과)
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Vacuum Magazine / v.2, no.2, 2015 , pp. 4-11 More about this Journal
Abstract
During last two decades, remarkable progresses have been made in organic electronic devices, such as organic light-emitting device, organic photovoltaic and many other applied devices. Many of these progress are attributed to the multilayered/heterojunction device architectures, which could be achieved from the control of "interfacial energetics". In that sense, the interfacial electronic structures in organic electronic devices have a decisive role in device performance. However, the prediction of the interfacial electronic structures from each separate material is not trivial. Many complex phenomena occur at the interface and these can be only understood from thorough measurements on interfacial electronic structures in situ. Photoemission and inverse photoemission spectroscopy have been known as the most proper measurement tools to analyze these interfacial electronic structures. In this review, the basic principles of (inverse) photoemission spectroscopy and typical measurement results on organic/inorganic interfaces are introduced.
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