Theoretical analysis and modeling of photoemission characteristics of GaAs nanowire array photocathodes
Theoretical analysis and modeling of photoemission characteristics of GaAs nanowire array photocathodes
复制标题
GaAs纳米线阵列光电阴极光电发射特性的理论分析与建模
DOI:
10.1088/2053-1591/2/9/095015
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发表时间:
2015-09
影响因子:
2.3
通讯作者:
Benkang Chang
中科院分区:
文献类型:
--
作者:
Xiaojun Ding;Zhaoping Chen;Yijun Zhang;Benkang Chang
Gallium arsenide (GaAs) nanowire array (NWA) photocathodes have unique electrical and optical properties. Based on studies about photon absorption, band structure, and electron transport properties of GaAs nanowire, a photoemission model for GaAs NWA photocathodes is established. According to the model, we simulate and analyze the photocurrent, spectral response, and absorption properties of ordered GaAs NWA photocathodes. The results present a very interesting phenomenon; the photocurrent and spectral response peak at incident angles of 20° and 30°, respectively. These special properties of NWA cathodes differentiate them from their thin film counterparts. We also analyze the effects of nanowire length and diameter on the photocurrent of NWA cathodes, and find the optimum height of the nanowires is 10 μm. This study shows that NWAs exhibit higher absorbance and excellent charge transport. Thus, GaAs NWA photocathodes are excellent candidates for electron sources.
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影响因子:
3.2
作者:
ASPNES, DE;KELSO, SM;BHAT, R
通讯作者:
BHAT, R
影响因子:
4
作者:
Zhi Liu;F. Machuca;P. Pianetta;W. Spicer;R. Pease
通讯作者:
Zhi Liu;F. Machuca;P. Pianetta;W. Spicer;R. Pease
DOI:
10.1016/j.physe.2006.07.002
发表时间:
2007-03-01
影响因子:
3.3
作者:
Piccin, M.;Bais, G.;Franciosi, A.
通讯作者:
Franciosi, A.
DOI:
10.1016/b978-0-12-813337-8.00009-6
发表时间:
2019
期刊:
Nanomaterials for Solar Cell Applications
影响因子:
--
作者:
S. Thiyagu;N. Fukata
通讯作者:
S. Thiyagu;N. Fukata
影响因子:
35
作者:
Jeroen Wehmeijer;B. V. Geest
通讯作者:
Jeroen Wehmeijer;B. V. Geest