Resonance-Enhanced Absorption in Hollow Nanoshell Spheres with Omnidirectional Detection and High Responsivity and Speed

Advanced Materials
Der-Hsien LienYi Cui

Abstract

Optical resonance formed inside a nanocavity resonator can trap light within the active region and hence enhance light absorption, effectively boosting device or material performance in applications of solar cells, photodetectors (PDs), and photocatalysts. Complementing conventional circular and spherical structures, a new type of multishelled spherical resonant strategy is presented. Due to the resonance-enhanced absorption by multiple convex shells, ZnO nanoshell PDs show improved optoelectronic performance and omnidirectional detection of light at different incidence angles and polarization. In addition, the response and recovery speeds of these devices are improved (0.8 and 0.7 ms, respectively) up to three orders of magnitude faster than in previous reports because of the existence of junction barriers between the nanoshells. The general design principles behind these hollow ZnO nanoshells pave a new way to improve the performance of sophisticated nanophotonic devices.

References

Mar 16, 2007·Nano Letters·C SociD Wang
Jul 7, 2009·Nature Materials·Linyou CaoMark L Brongersma
Feb 20, 2010·Nature Materials·Harry A Atwater, Albert Polman
Mar 17, 2010·Nano Letters·Linyou CaoMark L Brongersma
May 18, 2010·Nature Nanotechnology·Gerasimos Konstantatos, Edward H Sargent
Oct 25, 2012·ACS Nano·Cheng-Ying ChenJr-Hau He
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Apr 23, 2014·Nature Materials·Mark L BrongersmaShanhui Fan
Apr 17, 2014·The Journal of Physical Chemistry Letters·Siu-Fung LeungZhiyong Fan

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Citations

Apr 3, 2020·Nanotechnology·Han ZhouYijia Du
Dec 22, 2020·Advanced Materials·Hsin-Ping WangJr-Hau He
Feb 1, 2022·The Journal of Physical Chemistry Letters·Hailong XiongYujie Xiong

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