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

Journal Article · · Advanced Materials
 [1];  [2];  [1];  [1];  [1];  [3]; ORCiD logo [1];  [4]
  1. King Abdullah Univ. of Science and Technology (KAUST), Thuwal (Saudi Arabia)
  2. Chinese Academy of Sciences (CAS), Beijing (China)
  3. Chinese Academy of Sciences (CAS), Beijing (China); Griffith Univ., Queensland (Australia)
  4. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

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. As a result, the general design principles behind these hollow ZnO nanoshells pave a new way to improve the performance of sophisticated nanophotonic devices.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1476109
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 34 Vol. 30; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Ultra‐Early Diagnosis of Acute Myocardial Infarction in Rats Using Ultrasound Imaging of Hollow Double‐Layer Silica Nanospheres journal December 2019
Surface Effect on 2D Hybrid Perovskite Crystals: Perovskites Using an Ethanolamine Organic Layer as an Example journal October 2018
Hollow Multishelled Heterostructured Anatase/TiO 2 (B) with Superior Rate Capability and Cycling Performance journal January 2019
Ordered Hybrid Micro/Nanostructures and Their Optical Applications journal January 2019
Hollow multi-shell structured SnO 2 with enhanced performance for ultraviolet photodetectors journal January 2019
Hollow multi-shelled structures for energy conversion and storage applications journal January 2019
Enhanced polarization photodetection of metallic cavity ensemble through spontaneously configured lateral electrodes journal September 2019
Light-Trapping Engineering for the Enhancements of Broadband and Spectra-Selective Photodetection by Self-Assembled Dielectric Microcavity Arrays journal May 2019

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