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Solution-Processed Gold Nanorods Integrated with Graphene for Near-Infrared Photodetection via Hot Carrier Injection.
ACS Appl Mater Interfaces. 2015 Nov 04; 7(43):24136-41.AA

Abstract

Graphene-based photodetectors have attracted wide interest due to their high-speed, wide-band photodetection and potential as highly energy-efficient integrated devices. However, the inherently low-absorption cross-section and nonselective spectra response hinder its utilization as a high-performance photodetector. Here, we report a solution-processed and high-spectral-selectivity photodetector based on a gold nanorods (Au NRs)-graphene heterojunction with near-infrared (NIR) detection. Au NRs are used as a subwavelength scattering source, and nanoantennas with wide light absorption range from ultraviolet to near-infrared via tuning their geometry. Photons couple into Au NRs, exciting resonant plasmas and generating hot carriers that pump into graphene, resulting in selective NIR photodetection. A flexible NIR photodetector is also demonstrated based on this simple structure. Au NRs can achieve variable resonance frequencies by the design of different aspect ratios as nanoantennae for graphene, which promises the selective amplifying of the photoresponsivity and enables highly specific detection.

Authors+Show Affiliations

Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University , Suzhou, 215123, PR China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26468669

Citation

Xia, Zhouhui, et al. "Solution-Processed Gold Nanorods Integrated With Graphene for Near-Infrared Photodetection Via Hot Carrier Injection." ACS Applied Materials & Interfaces, vol. 7, no. 43, 2015, pp. 24136-41.
Xia Z, Li P, Wang Y, et al. Solution-Processed Gold Nanorods Integrated with Graphene for Near-Infrared Photodetection via Hot Carrier Injection. ACS Appl Mater Interfaces. 2015;7(43):24136-41.
Xia, Z., Li, P., Wang, Y., Song, T., Zhang, Q., & Sun, B. (2015). Solution-Processed Gold Nanorods Integrated with Graphene for Near-Infrared Photodetection via Hot Carrier Injection. ACS Applied Materials & Interfaces, 7(43), 24136-41. https://doi.org/10.1021/acsami.5b07299
Xia Z, et al. Solution-Processed Gold Nanorods Integrated With Graphene for Near-Infrared Photodetection Via Hot Carrier Injection. ACS Appl Mater Interfaces. 2015 Nov 4;7(43):24136-41. PubMed PMID: 26468669.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Solution-Processed Gold Nanorods Integrated with Graphene for Near-Infrared Photodetection via Hot Carrier Injection. AU - Xia,Zhouhui, AU - Li,Pengfei, AU - Wang,Yusheng, AU - Song,Tao, AU - Zhang,Qiao, AU - Sun,Baoquan, Y1 - 2015/10/22/ PY - 2015/10/16/entrez PY - 2015/10/16/pubmed PY - 2015/10/16/medline KW - gold nanorods KW - graphene KW - photodetector KW - plasmonic KW - solution-processed SP - 24136 EP - 41 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 7 IS - 43 N2 - Graphene-based photodetectors have attracted wide interest due to their high-speed, wide-band photodetection and potential as highly energy-efficient integrated devices. However, the inherently low-absorption cross-section and nonselective spectra response hinder its utilization as a high-performance photodetector. Here, we report a solution-processed and high-spectral-selectivity photodetector based on a gold nanorods (Au NRs)-graphene heterojunction with near-infrared (NIR) detection. Au NRs are used as a subwavelength scattering source, and nanoantennas with wide light absorption range from ultraviolet to near-infrared via tuning their geometry. Photons couple into Au NRs, exciting resonant plasmas and generating hot carriers that pump into graphene, resulting in selective NIR photodetection. A flexible NIR photodetector is also demonstrated based on this simple structure. Au NRs can achieve variable resonance frequencies by the design of different aspect ratios as nanoantennae for graphene, which promises the selective amplifying of the photoresponsivity and enables highly specific detection. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/26468669/Solution_Processed_Gold_Nanorods_Integrated_with_Graphene_for_Near_Infrared_Photodetection_via_Hot_Carrier_Injection_ L2 - https://dx.doi.org/10.1021/acsami.5b07299 DB - PRIME DP - Unbound Medicine ER -
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