TY - JOUR
T1 - Resonance-Enhanced Absorption in Hollow Nanoshell Spheres with Omnidirectional Detection and High Responsivity and Speed
AU - Lien, Der-Hsien
AU - Dong, Zhenghong
AU - Duran Retamal, Jose Ramon
AU - Wang, Hsin-Ping
AU - Wei, Tzu-Chiao
AU - Wang, Dan
AU - He, Jr-Hau
AU - Cui, Yi
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank Yu-Hsuan Hsiao and Hui-Chun Fu for technical support and helpful discussions. The authors thank the support by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR-2016-CRG5-3005), KAUST Sensor Initiative, KAUST Solar Center, and KAUST baseline funding and the Chinese Academy of Sciences and the National Natural Science Foundation of China (No. 21031005).
PY - 2018/7/18
Y1 - 2018/7/18
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/630749
UR - http://doi.wiley.com/10.1002/adma.201801972
UR - http://www.scopus.com/inward/record.url?scp=85050384163&partnerID=8YFLogxK
U2 - 10.1002/adma.201801972
DO - 10.1002/adma.201801972
M3 - Article
C2 - 30019787
SN - 0935-9648
VL - 30
SP - 1801972
JO - Advanced Materials
JF - Advanced Materials
IS - 34
ER -