Surface Plasmon-Enhanced Nano-photodetector for Green Light Detection

Abstract

Light manipulation is vitally important for onedimensional semiconductor nanostructure-based photodetectors which have great potential in future optoelectronic circuits, imaging technique, and light-wave communication. In this paper, we reported a plasmonic gold nanoparticle (AuNP)-decorated nano-photodetector for green light sensing. It is found that the as-fabricated device exhibits obvious increase in light absorption in the range from 400 to 550 nm, after functionalization of plasmonic AuNPs. Further device performance analysis reveals that the photocurrent of the plasmonic photodetector was increased by more than sevenfold, compared with that without coating. What is more, both responsivity and detectivity are found to increase as well. According to theoretical simulation based on the finite element method (FEM), the observed enhancement in device performance can be attributed to the surface plasmoninduced direct electron injection from the metal nanoparticles to the semiconductor nanostructures.

Low‐Dimensional Plasmonic Photodetectors: Recent Progress and Future Opportunities

“…Not only the MNP diameters, but also the core–shell structures of the MNPs can be accurately controlled, Colloidal Au NPs are usually synthesized by reduction of HAuCl 4 solution in alcohol, while colloidal Ag NPs can be obtained by citrate reduction of AgNO 3 aqueous solution. By further adsorbing the colloidal MNPs on single 1D semiconductor materials in solution phase, Luo and co‐workers achieved a 1D plasmonic photodetector with band‐edge absorption wavelengths from the UV to near‐infrared regions, including Cl‐doped ZnS (λ bandgap = 365 nm), ZnSe (λ bandgap = 480 nm), ZnTe (λ bandgap = 539 nm), CdSe (λ bandgap = 729 nm), Si nanorods (λ bandgap = 850 nm), and Bi 2 S 3 (λ bandgap = 953 nm) . Details of their enhanced performance are given in Table 1 .…”

Plasmon-induced hot carrier dynamics and utilization

“…In our opinion, the following three issues should be settled in the first place to accelerate the development of plasmon-induced hot carrier applications. [361] WS 2 ∕Au NPs Au NPs 1050 at 590 nm -Liu 2019 [363] CdTe nanowire/Au NPs Au NPs 2.26 × 10 4 at 826 nm 12.5 Luo 2014 [364] Ag/graphene oxide Ag NPs 17.23 at 785 nm 7.17 Rohizat 2021 [365] Ag/ZnSe nanowire Ag NPs 0.1848 at 480 nm 9.2 Wang 2016 [366] Au/ZnTe nanowire Au NPs 5.11 × 10 3 at 539 nm 328 Luo 2016 [367] Hollow Au NPs∕Bi 2 S 3 nanowire Au NPs 1.09 × 10 3 at 953 nm 278 Liang 2017 [368] ITO/Ge nanoneedles ITO NPs 0.185 at 1550 nm 228 Lu 2016 [369] Fig. 20 (a) Transient linear dichroism of a metasurface consisting of a lattice of Au symmetric nanocrosses.…”

Влияние внутреннего строения биметаллических наночастиц на оптические свойства материала AuAg/стекло

“…Особый интерес представляют наночастицы золота и серебра в стекле, поскольку в этом случае вклад от ППР в оптический спектр оказывается отделен от длин волн, соответствующих межзонным переходам. Преимуществом наночастиц с ППР (плазмонных наночастиц) является возможность локализации электромагнитного излучения на масштабах, меньших по сравнению с его длиной волны, что является ключевым для применений в области фотоники и оптоинформатики и уже сейчас используется для спектроскопии одиночных молекул и наноразмерных объектов [5,6].…”