Determination of the highest occupied molecular orbital energy of pentacene single crystals by ultraviolet photoelectron and photoelectron yield spectroscopies
Determination of the highest occupied molecular orbital energy of pentacene single crystals by ultraviolet photoelectron and photoelectron yield spectroscopies
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DOI：
10.7567/jjap.53.01ad03
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发表时间：
2014-01-01
影响因子：
1.5
通讯作者：
Ishii, Hisao
中科院分区：
文献类型：
--
作者：
Nakayama, Yasuo;Uragami, Yuki;Ishii, Hisao
利用紫外光电子能谱（UPS）和光电子产额谱（PYS）对并五苯单晶（SCs）的电子结构进行了表征。UPS获得的并五苯SCs的不对称HOMO峰剖面与理论计算预测的价带k投影态密度非常相似[H]。吉田和N.佐藤，物理学家。[j].生物工程学报，2009,27(5)。并五烯薄膜的电离能为4.95 (+/- 0.03)eV，明显大于并五烯薄膜的电离能[4.90 (+/- 0.02)eV]。(C) 2014 .日本应用物理学会
The electronic structures of pentacene single crystals (SCs) were elucidated by ultraviolet photoelectron spectroscopy (UPS) and photoelectron yield spectroscopy (PYS). An asymmetric HOMO peak profile of the pentacene SCs obtained by UPS exhibits a close similarity to the k-projected density-of-states of the valence band that has been predicted by a theoretical calculation [H. Yoshida and N. Sato, Phys. Rev. B 77, 235205 (2008)]. The ionization energy of the pentacene SCs is successfully determined to be 4.95 (+/- 0.03) eV which is evidently greater than that of the bulk films of pentacene [4.90 (+/- 0.02) eV]. (C) 2014 The Japan Society of Applied Physics