Tut, Turgut

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Profile URL
https://hdl.handle.net/20.500.12573/2647
Name Variants
Tut, T
Job Title
Dr. Öğr. Üyesi
Email Address
turgut.tut@agu.edu.tr
Main Affiliation
02.07. Malzeme Bilimi ve Nanoteknoloji Mühendisliği
Status
Current Staff
Website
ORCID ID
0000-0002-4589-201X
Scopus Author ID
6602881399
Turkish CoHE Profile ID
25201
Google Scholar ID
SFPaIbIAAAAJ
WoS Researcher ID
CDC-3046-2022

Sustainable Development Goals

7

AFFORDABLE AND CLEAN ENERGY
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2

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Documents

24

Citations

894

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13

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Documents

26

Citations

815

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Scholarly Output

3

Articles

3

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6/0

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

1

Scopus Citation Count

1

WoS h-index

1

Scopus h-index

1

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0

Projects

2

WoS Citations per Publication

0.33

Scopus Citations per Publication

0.33

Open Access Source

2

Supervised Theses

0

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Advanced Theory and Simulations1
Balkan Journal of Electrical and Computer Engineering1
Silicon1
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    Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Achieving High Optical Absorption in Thin Film Photovoltaic Devices via Nanopillar Arrays and Metal Nanoparticles
    (Wiley-VCH Verlag GmbH, 2025) Tut, Turgut
    In this study, crystalline silicon nanopillars has been employed as a hexagonal array photonic crystal structure with low optical reflection, augmented by silver metallic nanoparticles ranging from 10 to 50 nm in diameter in order to achieve high absorption in thin silicon films, a critical factor for applications in photovoltaic devices. Initially, it has been begun with an optimized structure in terms of pillar filling ratio, pillar height, and diameter, as established in the previous study. This allows to obtain a hexagonal array of nanopillars with a surface characterized by low optical reflection. To enhance the optical absorption within the bulk of the silicon thin film, the optical scattering properties of silver (Ag) metallic nanoparticles (MNPs) has been harnessed. The integration of silver metal nanoparticles into the photonic crystal hexagonal nanopillar array involved introducing a cavity into the silicon pillar. Placing Ag MNPs near the bottom of the cavity prevented the degradation of the photonic crystal's ability to maintain low reflection within the desired optical spectrum (between 400-1100 nm). Comparison between the nanopillar hexagonal array structure with Ag MNPs and the bare silicon substrate revealed a remarkable 104.76 percent increase in optical absorption for a 1-micron thick silicon bulk material. This triple hybrid structure exhibits tremendous potential in photovoltaic device applications, including solar cells and photodetectors, with the capacity to significantly enhance conversion efficiency.
  • Thumbnail Image
    Article
    Broadband Low Reflection Surfaces With Silicon Nano-Pillar Square Arrays for Energy Harvesting
    (2022) Tut, Turgut
    In this work, optimization of the nanopillar arrays and thin films coated on silicon substrate has been investigated in order to minimize the optical reflection loss from the silicon substrate surface. Nano-pillars's height, incline angle, array properties are systematically optimized. Full field Finite Difference Time Domain method is used to simulate EM fields and calculate the reflection from the modified nanostructured substrate surfaces in 400nm-1100nm spectral range. Optimization recipe is clearly presented and it is not only useful for square arrays but for regular arrays of nano-pillars in general.
  • Thumbnail Image
    Article
    Broadband Low Reflection Surfaces With Silicon Nanopillar Hexagonal Arrays for Energy Harvesting in Photovoltaics
    (Springer, 2022) Tut, Turgut
    In this study, optimization of the silicon nanopillar arrays and thin films coated on silicon substrate has been investigated in order to minimize the optical reflection loss from the silicon substrate surface. Nanopillars's filling ratio, pillar height, pillars diameter, sidewall incline angle, and step coverage with dielectric thin film thickness are systematically optimized together for the first time with these type of nanostructures. Full-field Finite Difference Time Domain method is used to simulate electro-magnetic fields and calculate the reflection from the modified nanostructured substrate surfaces in 400-1100 nm spectral range. Optimization recipe is clearly presented and this is not only useful for hexagonal arrays but also for regular arrays of nanopillars in general. We also further decrease the reflection by using step coverage concept which is the result of nonconformal coating on steps and trenches of thin films. We obtained approximately 2% of weighted average reflection in the 400-1100 nm range for perpendicular incident solar radiation which is one of the best results reported for this type of nanostructured surfaces in the literature.