Direct measurement of conduction miniband structure in superlattice by visible-light photoemission spectroscopy

Direct measurement of conduction miniband structure in superlattice by visible-light photoemission spectroscopy
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可见光光电子能谱直接测量超晶格中的传导微带结构

DOI:
10.1109/pvsc.2014.6925534
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发表时间:
2015
期刊:
2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)
影响因子:
--
通讯作者:
Toru Ujihara
Toru Ujihara
中科院分区:
--
文献类型:
--
作者:
Fumiaki Ichihashi;Daisuke Shimura;Kenji Nishitani;Tatsuki Kawaguchi;Masashi Kuwahara;Takao Ito;Shingo Harada;Hiroyasu Katsuno;Masaki Tagawa;Toru Ujihara

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我们提出了一种新颖的角分辨光电子能谱来测量从具有负电子亲和势态的表面发射的传导电子。我们将这种方法称为可见光光电子能谱(VPS)。在本研究中,通过 VPS 方法评估了超晶格中形成的传导微带结构。结果,我们成功获得了迷你频带的色散。此外,根据观察到的色散定量确定了微带的有效质量。因此,我们认为VPS是评估中波段太阳能电池的一个非常强大的工具。
We have proposed a novel angle-resolved photoemission spectroscopy to measure the conduction electrons emitted from a surface with negative electron affinity state. We call this method visible-light photoemission spectroscopy (VPS). In the present study, the conduction miniband structure formed in a superlattice was evaluated by the VPS method. As a result, we succeeded to obtain the dispersion of the miniband. In addition, the effective mass of the miniband was quantitatively determined from the observed dispersion. Therefore, we believe that VPS is a quite powerful tool for the evaluation of intermediate-band solar cells.
利用 NEA 表面由可见光激发的传导电子的电子能谱
DOI: 10.1109/pvsc.2013.6744149
发表时间: 2013
期刊: 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)
影响因子: --
作者:
F. Ichihashi;D. Shimura;K. Nishitani;M. Kuwahara;T. Ito;S. Harada;M. Tagawa;T. Ujihara
通讯作者: T. Ujihara
“中能带太阳能电池超晶格结构中形成的迷你能带的评估”
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
D.Shimura;F.Ichihashi;K.Nishitani;S.Harada;T.Ito;M.Kuwahara;M.Matsunami;S.Kimura;M.Tagawa;T.Ujihara
通讯作者: T.Ujihara