Direct observation of the electronic states of single crystalline rubrene under ambient condition by photoelectron yield spectroscopy
Direct observation of the electronic states of single crystalline rubrene under ambient condition by photoelectron yield spectroscopy
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DOI：
10.1063/1.2998650
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发表时间：
2008-10-27
影响因子：
4
通讯作者：
Ishii, Hisao
中科院分区：
文献类型：
--
作者：
Nakayama, Yasuo;Machida, Shinichi;Ishii, Hisao
用光电子产额谱实验观察了单晶(SC)Rubrene的电子态，没有样品充电的问题。测得Sc相的电离能(i-S)为4.85(+0.05)eV，比非晶态薄膜降低了0.45 eV。还直接观察了光氧化反应和环境空气中电子状态的变化，揭示了i-S的进一步还原，这分别归因于极性氧化物分子的生成和H2O的可逆物理吸附。(C)2008年美国物理研究所。[DOI：10.1063/1.2998650]
The electronic states of single crystalline (SC) rubrene were experimentally observed by photoelectron yield spectroscopy without the sample charging problem. The ionization energy (I-s) in the SC phase was determined to be 4.85 (+0.05) eV, which is reduced by 0.45 eV compared to that of the amorphous film. The changes in the electronic states during photo-oxidation reaction and under ambient air were also observed directly to reveal the further reduction in I-s, which can be attributed to the generation of polar oxide molecules and reversible physisorption of H2O, respectively. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2998650]