带隙
蓝移
纳米孔
材料科学
硅
纳米线
凝聚态物理
化学物理
纳米技术
宽禁带半导体
光电子学
分子物理学
化学
物理
光致发光
作者
Gang Ouyang,Ai Zhang,Ziming Zhu,Weiguang Zhu,Guowei Yang
摘要
An analytic model addressing the energy bandgap of nanoporous (NPs) structures with aligned cylindrical pores has been established from the perspective of nanothermodynamic considerations. It is found that the bandgap energies of NPs structures are unambiguously blueshifted as compared with those of nanowires with the same sizes and the bulk counterparts. The anomalous surface energies in the inner and outer surfaces of NPs structures seem the physical origin of the bandgap shifts. Agreement between the theoretical predictions and the evidence from experimental measurements and calculations suggested that the proposed method could be expected to be applicable to NPs structural materials.
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