Registration Number
0225U002900,
(0120U102282)
, R & D reports
Title
Composite structures with surface silicon nanoclusters and metals to improve the efficiency of solar photoconverters
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Композитні структури з поверхневими нанокластерами кремнію та металів для покращення ефективності сонячних фотоперетворювачів
Head
Kostylov Vitalii P., Доктор фізико-математичних наук
Registration Date
16-04-2025
Organization
V. Lashkaryov Institute of Semiconductor Physics of National Academy
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The aim of this work is to obtain new data on the features of photoconversion mechanisms in composite structures with surface silicon nanoclusters and metals to improve the efficiency of solar cells.
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Samples of composite films of nanostructured silicon with embedded clusters of palladium, palladium oxide and tungsten trioxide in pores were produced on the basis of p-type silicon of KGB-9 grade conductivity using a three-stage technology.
It was established that the VIMS spectra of composite films of nanostructured silicon with embedded clusters of palladium, palladium oxide and tungsten trioxide in pores simultaneously record signals from Si, SiO, Pd, PdO and WO3, which indicates that the films of the composite based on the nanoporous silicon matrix are discontinuous and have a nanostructured surface and volume. AFM images of the nanoporous surface of samples of the semiconductor matrix with incorporated nanoclusters of transition metals were obtained. From the analysis of AFM images, the features of the surface morphology of the composite matrix based on porous Si with inclusions of metal clusters were established, in particular their size distribution for different metals. The processes of Ag nanoparticle deposition, Si etching and subsequent washing were optimized: (i) Ag nanoparticle deposition time t= 60 s and more, (ii) Si etching time t = 30 min, (iii) washing time to remove excess Ag nanoparticles after etching t 30 min. The Si NWs array formed under optimized conditions shows a low reflection coefficient R < 1% in a wide spectral range. The presence of metal nanoparticles on the surface significantly affects the optical spectra. Pronounced peaks (790 nm and 850 nm) were detected in the reflection spectra for nanowires with silver nanoparticles in the long-wavelength region.
Product Description
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Yevtukh Anatolii A.
Bratus Oleh L.
Vlasiuk Viktor M.
Voytovych Mariia V.
Horbaniuk Tetiana I.
Dvernikov Borys F.
Korkishko Roman M.
Kravtsov Valentyn A.
Kurchak Anatolii I.
Sachenko Anatolii V.
Serba Oleksandr A.
Sokolovskyi Ihor O.
Fedorenko Leonid L.
Chernenko Volodymyr V.
Chudovska Halyna V.
Shuhaieva Liubov M.
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2025-04-16
