Journal ArticleDOI
Improved broadband antireflection in Schottky-like junction of conformal Al-doped ZnO layer on chemically textured Si surfaces
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TLDR
In this paper, chemically textured Si with improved absorption in the complete range of solar spectrum was investigated by ultraviolet/visible/near-infrared (UV/Vis/NIR) spectroscopy, showing an average specular reflectance of ∼ 0.4% in the wavelength of 500-3000nm.Abstract:
Chemically textured Si with improved absorption in the complete range of solar spectrum is investigated by ultraviolet/visible/near-infrared (UV/Vis/NIR) spectroscopy, showing an average specular reflectance of ∼0.4% in the wavelength of 500–3000 nm. The pyramidal structures on such solar-blind Si can reduce the reflectance further below 0.1% in the UV region by conformal growth of granular Al-doped ZnO (AZO) films. X-ray diffraction analyses suggest the growth of polycrystalline AZO on faceted-Si. Moreover, marginal increase in electrical conductivity of AZO is found on textured surfaces, whereas rise in leakage current in Schottky-like Ag/AZO/Si/Ag heterostructure devices is noticed with increasing Si surface area.read more
Citations
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Journal ArticleDOI
Growth of TiO 2 thin films on chemically textured Si for solar cell applications as a hole-blocking and antireflection layer
Ranveer Singh,Ranveer Singh,Mohit Kumar,Mohit Kumar,Mahesh Saini,Mahesh Saini,Avanendra Singh,Biswarup Satpati,Tapobrata Som,Tapobrata Som +9 more
TL;DR: In this article, the authors investigate the broad-band photoabsorption of an n-TiO2 thin film and its hole-blocking properties when a heterostructure is grown on a chemically textured p-Si substrate.
Journal ArticleDOI
Impact of Self-Trapped Excitons on Blue Photoluminescence in TiO2 Nanorods on Chemically Etched Si Pyramids
C. P. Saini,A. Barman,Debosmita Banerjee,O. Grynko,S. Prucnal,Mukul Gupta,D. M. Phase,Anil K. Sinha,D. Kanjilal,Wolfgang Skorupa,Aloke Kanjilal +10 more
TL;DR: In this article, temperature-dependent photoluminescence (PL) of titanium oxide (TiO2) shows an evolution of blue emission when exposed to 50 keV Ar+ ions.
Journal ArticleDOI
The pivotal role of TiO2 layer thickness in optimizing the performance of TiO2/P-Si solar cell
TL;DR: In this article, the effect of the thickness of the TiO2 thin film on the structural, optical, electrical and photovoltaic properties has been investigated using the well-known thermal evaporation technique.
Journal ArticleDOI
Role of Oxygen Vacancy on the Hydrophobic Behavior of TiO2 Nanorods on Chemically Etched Si Pyramids
C. P. Saini,A. Barman,D. Das,Biswarup Satpati,Satyaranjan Bhattacharyya,D. Kanjilal,Alexey Ponomaryov,Sergei Zvyagin,Aloke Kanjilal +8 more
TL;DR: In this article, the authors investigated the hydrophobicity of self-assembled TiO2 nanorods on chemically etched Si pyramids by irradiating with 50 keV Ar+-ions at room temperature.
Journal ArticleDOI
Defect-engineered optical bandgap in self-assembled TiO2 nanorods on Si pyramids
TL;DR: In this article, the authors investigated the optical-bandgap (Eg) of self-assembled crystalline TiO2 nanorods to amorphous layer and the corresponding impact on Si pyramids by irradiating with 50'keV Ar+-ions.
References
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Journal ArticleDOI
Highly selective spectral response with enhanced responsivity of n-ZnO/p-Si radial heterojunction nanowire photodiodes
Han-Don Um,Syed Abdul Moiz,Kwang-Tae Park,Jin-Young Jung,Sang-Won Jee,Cheol Hyoun Ahn,Dong Chan Kim,Hyung Koun Cho,Dong-Wook Kim,Jung-Ho Lee +9 more
TL;DR: In this article, a radial heterojunction nanowire diode (RND) array consisting of a ZnO (shell)/Si (core) structure was fabricated using conformal coating of a n-type znO layer that surrounded a p-type Si nanowires.
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Majid Gharghi,Majid Gharghi,Ehsanollah Fathi,Boubacar Kante,Siva Sivoththaman,Xiang Zhang,Xiang Zhang +6 more
TL;DR: In this paper, radial heterojunction solar cells of amorphous silicon on crystalline silicon microwires with high surface passivation were reported, which achieved a photocurrent of ∼30 mA/cm2, and the same time, voltages close to 600 mV.
Journal ArticleDOI
Two-dimensional photonic crystal for absorption enhancement in hydrogenated amorphous silicon thin film solar cells
Guillaume Gomard,Emmanuel Drouard,Xavier Letartre,Meng Xianqin,A. Kaminski,Alain Fave,Mustapha Lemiti,Enric Garcia-Caurel,Christian Seassal +8 more
TL;DR: In this paper, a planar planar photonic crystal (PPC) was used for a photovoltaic solar cell design based on a 100 nm thick absorbing layer made of hydrogenated amorphous silicon and patterned as a two-dimensional planar PPC.
Journal ArticleDOI
Conformal Transparent Conducting Oxides on Black Silicon
Martin Otto,Matthias Kroll,Thomas Käsebier,Seung-Mo Lee,Matti Putkonen,Roland Salzer,Paul T. Miclea,Ralf B. Wehrspohn +7 more
TL;DR: This communication addresses the question: is a perfectly conformal coating with a transparent conducting oxide (TCO) possible on a b-Si surface and how does the TCO affect the optical properties of the b- Si surface.
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