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Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces.

Dmitruk NL, Borkovskaya OY, Mamontova IB, Mamykin SV, Malynych SZ, Romanyuk VR - Nanoscale Res Lett (2015)

Bottom Line: Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO2 core-shell nanoparticles from aqueous colloid solution.The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition.The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

View Article: PubMed Central - PubMed

Affiliation: Department of Polaritonic Optoelectronics, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41 Nauky av., Kyiv, 03028 Ukraine.

ABSTRACT
The photocurrent enhancement effect caused by Au and Ag nanoparticles for GaAs-based photovoltaic structures of surface barrier or p-n junction type with microtextured interfaces has been investigated in dependence on the conditions of nanoparticles deposition and, respectively, on the shape and local dielectric environment of obtained nanoparticle arrays. Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO2 core-shell nanoparticles from aqueous colloid solution. The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition. The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

No MeSH data available.


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The spectra of the short-circuit photocurrent for Au/GaAs diode structures. Structures have flat surface (1) and microtextured one (2 to 4), where (3) - for structures with introduced (PVP/Ag nanoparticles) layers, (4) - for structures with Au nanowires chemically deposited on the ridges of grating-like-type microrelief of GaAs surface.
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Fig4: The spectra of the short-circuit photocurrent for Au/GaAs diode structures. Structures have flat surface (1) and microtextured one (2 to 4), where (3) - for structures with introduced (PVP/Ag nanoparticles) layers, (4) - for structures with Au nanowires chemically deposited on the ridges of grating-like-type microrelief of GaAs surface.

Mentions: The optical characteristic peculiarities affect the value and spectral dependencies of the light transmittance into semiconductor and photocurrent of corresponding photovoltaic structures (FigureĀ 4).Figure 4


Metal nanoparticle-enhanced photocurrent in GaAs photovoltaic structures with microtextured interfaces.

Dmitruk NL, Borkovskaya OY, Mamontova IB, Mamykin SV, Malynych SZ, Romanyuk VR - Nanoscale Res Lett (2015)

The spectra of the short-circuit photocurrent for Au/GaAs diode structures. Structures have flat surface (1) and microtextured one (2 to 4), where (3) - for structures with introduced (PVP/Ag nanoparticles) layers, (4) - for structures with Au nanowires chemically deposited on the ridges of grating-like-type microrelief of GaAs surface.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385134&req=5

Fig4: The spectra of the short-circuit photocurrent for Au/GaAs diode structures. Structures have flat surface (1) and microtextured one (2 to 4), where (3) - for structures with introduced (PVP/Ag nanoparticles) layers, (4) - for structures with Au nanowires chemically deposited on the ridges of grating-like-type microrelief of GaAs surface.
Mentions: The optical characteristic peculiarities affect the value and spectral dependencies of the light transmittance into semiconductor and photocurrent of corresponding photovoltaic structures (FigureĀ 4).Figure 4

Bottom Line: Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO2 core-shell nanoparticles from aqueous colloid solution.The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition.The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

View Article: PubMed Central - PubMed

Affiliation: Department of Polaritonic Optoelectronics, V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41 Nauky av., Kyiv, 03028 Ukraine.

ABSTRACT
The photocurrent enhancement effect caused by Au and Ag nanoparticles for GaAs-based photovoltaic structures of surface barrier or p-n junction type with microtextured interfaces has been investigated in dependence on the conditions of nanoparticles deposition and, respectively, on the shape and local dielectric environment of obtained nanoparticle arrays. Three nanoparticle deposition methods have been checked: 1) photoinduced chemical deposition of Au from aqueous AuCl3 solution forming nanowires on the ridges of quasigrating-type surface microrelief, 2) deposition of Ag nanoparticles from colloidal suspension on the GaAs substrate covered with poly(vinylpyridine), and 3) drop and dry deposition of Au/SiO2 core-shell nanoparticles from aqueous colloid solution. The comprehensive investigation of optical reflectance, photoelectric, and electrical characteristics of the fabricated barrier structures has shown the highest photovoltaic parameters for surface microrelief of quasigrating-type and electroless Au nanoparticle deposition. The analysis of characteristics obtained allowed us also to define the mechanisms of the total photocurrent enhancement.

No MeSH data available.


Related in: MedlinePlus