Effect of nitrogen pressure on the performance of a-C:N/p-Si photodetector prepared by pulsed laser deposition

Ismail, Raid A.; Mousa, Ali M.; Hussain, Zainab T.

doi:10.1016/j.ijleo.2017.04.030

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…The frequency changed toward a higher wavenumber as laser energy increased. Also, the strength was increased due to the high concentration of CNPs [31,32]. ).…”

Section: Resultsmentioning

confidence: 99%

Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

Addie¹,

Khashaan

Saimon

et al. 2021

eijs

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Carbon nanoparticles (CNPs) formed by one-step laser ablation in deionized water were carefully studied. Scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and UV–V spectroscopy were used to obtain morphological, chemical, and optical properties of CNPs. SEM outcomes established that the synthesized nanoparticles are semi-spherical with a wide particle size distribution. Raman investigation showed two typical and expected peaks ~ (1300 - 2700) cm−1, which are confirming to transverse and longitudinal modes of the carbon structure. The absorption spectra proved that the intensity of spectra increases as particle size and concentration increase.

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“…The frequency changed toward a higher wavenumber as laser energy increased. Also, the strength was increased due to the high concentration of CNPs [31,32]. ).…”

Section: Resultsmentioning

confidence: 99%

Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

Addie¹,

Khashaan

Saimon

et al. 2021

eijs

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“…The light has a high-power density that diffuses more into the depletion site and forms more photoexcited electron-hole pairs. As the number of charge carriers increases, accumulation of the charge in the depletion region increases, which results in a rise in the photocurrent [71][72][73]. Thus, the photodetector has shown the lowest photocurrent for 25 mW/cm 2 power density, while the highest photocurrent for 100 mW/cm 2 power density.…”

Section: Electrical Characterization Of Non-doped and Bi:cuo/si Heter...mentioning

confidence: 99%

Enhanced Opto-Electronic Properties of Bi:CuO/n-Si Heterojunctions for Photodetector Applications

Sutcu,

Yigit Gezgin,

Baturay

et al. 2024

Acta Phys. Pol. A

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An effective photodetector based on a family of p-type semiconductors with unique properties is still required by current trends in optoelectronics. The purpose of this study is to enhance the performance of p-type copper oxide films by doping them with bismuth. The pure copper oxide films were successfully fabricated with 1, 2, and 3 wt% of Bi by the spin coating method in an air atmosphere. Advanced techniques were used to describe the fabricated non-doped and Bi-doped CuO films to understand their structural, topological, and optical characteristics. X-ray diffraction patterns of non-doped and Bi-doped CuO films have demonstrated that they have polycrystalline structures, with a preference for growth in both (−111) and ( 200) orientations. Copper oxide film with 2% Bi doping exhibited the most uniform particle size distribution compared to others. While 3% Bi-doped CuO thin film exhibits the highest photon absorption, 2% Bi-doped CuO thin film transmits more photons. The direct band gaps of the non-doped and Bi-doped CuO samples were found between 1.77 and 1.94 eV. Copper oxide thin film with 2% Bi has the lowest refractive index. While the 2% Bi-doped CuO heterojunction photodetector shows the highest photosensitivity, responsivity, and detectivity, its rise and time are the lowest. Since 2% Bi-doped CuO film has a good crystal structure, large crystalline size, low particle boundary numbers, and a more homogeneous particle size distribution, the number of traps and defects in this thin film is low, and the recombination of charge carriers is limited. Thus, this thin-film-based heterojunction exhibited the best photodetector property, and the results of this work give a way to create effective photodetectors and adjust their performance over a broad range. topics: Bi-doped CuO, spin coating, photodetector, rise time

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“…The variation of I D /I NC ratio with increasing substrate temperature showed a similar trend to that of I D /I G ratio. Generally, a high I D /I G ratio is an indication for a high content of sp 2 carbon clusters 60 , 63 , 64 . As a consequence, the amount of sp 2 carbon clusters reduced as the substrate temperature increased up to 200 °C.…”

Section: Experiments and Data Analysismentioning

confidence: 99%

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

Addie

Ismail

Mohammed

2022

Sci Rep

Self Cite

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Crystalline silicon (c-Si) solar cells have dominated the photovoltaic industry for decades. However, due to high reflectivity and the presence of numerous types of surface contaminants, the solar cell only absorbs a limited amount of the incident solar radiation. To improve the efficiency of the solar cell, anti-reflection and self-cleaning coatings must be applied to the surface. The main objective of this work is to synthesize an amorphous carbon nitride CNx thin film as a novel dual-function anti-reflection coating (ARC) for c-Si solar cells. The CNx film was synthesized by the RF magnetron sputtering technique and characterized by different chemical, structural, and optical analysis techniques. The performance of CNx film was investigated via measuring the reflectance, photoelectric conversion efficiency, and external quantum efficiency. The minimum reflectance was 0.3% at 550 nm wavelength, and the external quantum efficiency achieved was more than 90% within the broad wavelength range. The open circuit voltage and short circuit current density that have been achieved are 578 mV and 33.85 mAcm−2, respectively. Finally, a photoelectric conversion efficiency of 13.05% was achieved with the coated c-Si solar cell in comparison with 5.52% for the uncoated c-Si solar cell. This study shows that CNx films have promising application potential as an efficient ARC for c-Si solar cells as compared to traditional ARC materials.

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Effect of nitrogen pressure on the performance of a-C:N/p-Si photodetector prepared by pulsed laser deposition

Cited by 8 publications

References 35 publications

Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

Impact of Laser Energy on Features of Carbon Nanostructure Materials Prepared by A One-Step Pulsed Laser Ablation in Water

Enhanced Opto-Electronic Properties of Bi:CuO/n-Si Heterojunctions for Photodetector Applications

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

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