High performance light trapping structures for Si-based photoelectronics fabricated by hybrid picosecond laser irradiation and chemical corrosion

2015 ◽  
Author(s):  
Lingfei Ji ◽  
Xiaozhan Lv ◽  
Yan Wu ◽  
Zhenyuan Lin ◽  
Yijian Jiang
Keyword(s):  
Laser Irradiation ◽  
High Performance ◽  
Light Trapping ◽  
Picosecond Laser ◽  
Chemical Corrosion

Fabrication of High Performance Anti-Reflection Silicon Surface by Picosecond Laser Scanning Irradiation with Chemical Corrosion

2015 ◽  
Vol 42 (4) ◽  
pp. 0403006
Author(s):  
吕晓占 Lü Xiaozhan ◽  
季凌飞 Ji Lingfei ◽  
吴燕 Wu Yan ◽  
林真源 Lin Zhenyuan ◽  
闫胤洲 Yan Yinzhou
Keyword(s):  
Silicon Surface ◽  
High Performance ◽  
Laser Scanning ◽  
Picosecond Laser ◽  
Chemical Corrosion ◽  
Scanning Irradiation

scholarly journals 2D MoS2 Encapsulated Silicon Nanopillar Array with High-Performance Light Trapping Obtained by Direct CVD Process

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 267
Author(s):  
Minyu Bai ◽  
Zhuoman Wang ◽  
Jijie Zhao ◽  
Shuai Wen ◽  
Peiru Zhang ◽  
...  
Keyword(s):  
Silicon Substrate ◽  
High Performance ◽  
Low Cost ◽  
Light Trapping ◽  
Incident Light ◽  
Single Layer ◽  
Chemical Vapor ◽  
Optoelectronic Device ◽  
Planar Silicon ◽  
Shortwave Infrared

Weak absorption remains a vital factor that limits the application of two-dimensional (2D) materials due to the atomic thickness of those materials. In this work, a direct chemical vapor deposition (CVD) process was applied to achieve 2D MoS2 encapsulation onto the silicon nanopillar array substrate (NPAS). Single-layer 2D MoS2 monocrystal sheets were obtained, and the percentage of the encapsulated surface of NPAS was up to 80%. The reflection and transmittance of incident light of our 2D MoS2-encapsulated silicon substrate within visible to shortwave infrared were significantly reduced compared with the counterpart planar silicon substrate, leading to effective light trapping in NPAS. The proposed method provides a method of conformal deposition upon NPAS that combines the advantages of both 2D MoS2 and its substrate. Furthermore, the method is feasible and low-cost, providing a promising process for high-performance optoelectronic device development.

Influence of picosecond laser irradiation on nickel-based superalloy surface microstructure

2012 ◽  
Vol T149 ◽  
pp. 014079 ◽  
Author(s):  
S Petronić ◽  
D Milovanovic ◽  
A Milosavljević ◽  
M Momcilovic ◽  
D Petrusko
Keyword(s):  
Laser Irradiation ◽  
Picosecond Laser ◽  
Surface Microstructure ◽  
Nickel Based Superalloy

Polarization-Insensitive Dielectric Metamaterials Absorber for Near-Unity UV-Light Trapping in Monolayer Graphene

2020 ◽  
Author(s):  
Yinong Xie ◽  
Xueying Liu ◽  
Yijun Cai ◽  
Jinfeng Zhu
Keyword(s):  
Magnetic Resonance ◽  
High Performance ◽  
Uv Light ◽  
Light Trapping ◽  
Normal Incidence ◽  
Resonant Absorption ◽  
Base Layer ◽  
Absorption Enhancement ◽  
Monolayer Graphene ◽  
Polarization Insensitive

Abstract With the aim of improving UV light trapping capability in monolayer graphene, a metamaterials absorber is proposed, which exhibits the polarization-insensitive feature due to the geometrical symmetry. Through the functional combination of magnetic resonance and UV mirror, the absorption of unpolarized UV light in monolayer graphene can reach 99.5% under normal incidence. The absorption enhancement is induced by the magnetic resonance mode between the dielectric silica nanomesh and the calcium fluoride base layer. The effects of geometric parameters on the absorption spectra are systematically investigated. By optimizing the metamaterials design, two distinct resonant absorption peaks can be excited simultaneously for monolayer graphene. Our work paves the way for applications on high-performance UV metamaterials devices by using two-dimensional materials.

scholarly journals Silicon Substrate Treated with Diluted NaOH Aqueous for Si/PEDOT: PSS Heterojunction Solar Cell with Performance Enhancement

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4659
Author(s):  
Tao Chen ◽  
Hao Guo ◽  
Leiming Yu ◽  
Tao Sun ◽  
Yu Yang
Keyword(s):  
Aqueous Solution ◽  
Solar Cell ◽  
Silicon Substrate ◽  
High Performance ◽  
Immersion Time ◽  
Performance Enhancement ◽  
Light Trapping ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Short Circuit Current Density

Si/PEDOT: PSS solar cell is an important alternative for photovoltaic device due to its anticipated high theoretical efficiency and simple manufacturing process. In this study, processing silicon substrate with diluted NaOH aqueous solution was found to be an effective method for improving device performance, one that notably improves junction quality and light trapping ability. When immersed in diluted NaOH aqueous solution, the junction quality was improved according to the enlarged fill factor, reduced series resistance, and enhanced minor carrier lifetime. The diluted NaOH aqueous solution immersion etched the silicon surface and helped with the enhancement of light trapping ability, further improving the short-circuit current density. Although diluted NaOH aqueous solution immersion for bare silicon could improve the performance of devices, proper immersion time was needed. The influence of immersion time on device performances was investigated. The photovoltaic conversion efficiency easily increased from 10.01% to 12.05% when silicon substrate was immersed in diluted NaOH aqueous for 15 min. This study contributes to providing efficient and convenient methods for preparing high performance Si/PEDOT: PSS solar cells.

A high-performance cupric oxide photocatalyst with palladium light trapping nanostructures and a hole transporting layer for photoelectrochemical hydrogen evolution

2019 ◽  
Vol 7 (39) ◽  
pp. 22332-22345 ◽  
Author(s):  
Saeid Masudy-Panah ◽  
Reza Katal ◽  
Negar Dasineh Khiavi ◽  
Ehsan Shekarian ◽  
Jiangyong Hu ◽  
...  
Keyword(s):  
High Performance ◽  
Collection Efficiency ◽  
Cupric Oxide ◽  
Light Trapping ◽  
Photogenerated Electron ◽  
Limiting Factors ◽  
Electron Hole ◽  
Absorption Length ◽  
Charge Collection Efficiency ◽  
Hole Transporting

The high recombination rate of photogenerated electron–hole pairs, poor photocorrosion stability, and the discrepancy between the optical absorption length and charge collection efficiency of cupric oxide (CuO) are the main limiting factors of CuO photocatalysts.

scholarly journals Light trapping and surface plasmon enhanced high-performance NIR photodetector

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Lin-Bao Luo ◽  
Long-Hui Zeng ◽  
Chao Xie ◽  
Yong-Qiang Yu ◽  
Feng-Xia Liang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
High Performance ◽  
Light Trapping
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