New trends in ZnO nanoparticles/n-Si heterojunction photodetector preparation by pulsed laser ablation in ethanol

Ismail, Raid A.; Habubi, Nadir F.; Hadi, Esraa H.

doi:10.1016/j.ijleo.2017.08.113

Cited by 12 publications

(5 citation statements)

References 17 publications

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“…At extreme conditions induced by high-power LAL of Zn in water (e.g., 1.7×10 11 W/cm 2 at λ=1064 nm and 8.3×10 10 W/cm 2 at λ=532 nm excitation), the high-pressure phase of W-ZnO and ε-Zn(OH) 2 composite nanocondensates is producible [251]. Summary of products obtained by LAL of Zn is shown in Table 8 [71,72,101,243,[251][252][253][254][255][256][257][258][259][260][261][262][263][264][265][266][267]. Ishikawa et al [254] reported that the growth of ZnO particles into columnar structures starts at temperatures higher than 60°C and becomes finely crystalized at 80°C.…”

Section: Znmentioning

confidence: 99%

Diverse nanomaterials synthesized by laser ablation of pure metals in liquids

Zhang

Liang

2022

Sci. China Phys. Mech. Astron.

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Diverse nanomaterials, in the forms of carbides, sulfides, oxides, metals, hydroxides, etc., have been synthesized by laser ablation in liquids (LAL) with metal targets as the dominant educts. Many advantages of LAL technique itself and its products have been revealed since 1983 when the first report about LAL was released. Different from traditional wet-chemical synthesis, one unique feature of LAL is its resultant extreme high-temperature and high-pressure local environment for the nucleation and growth of nanomaterials, despite being performed at room temperature. This extreme condition can induce the atomization and ionization of the target materials and liquid molecules to incur different chemical reactions. The laser, liquid, liquid additive, and target can significantly alter the local environment in a broad range. Thus, different phases and shapes of nanomaterials are producible even from the same target. Through directly comparing the products of LAL of 13 kinds of chosen representative metals synthesized under different conditions, this review presents and discusses current understandings, challenging issues, and perspectives related to the diversity of LAL-products, which is willing to promote a deeper investigation and discussion on a clear clarification of the chemical reactions and particle nucleation/growth processes.

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Section: Znmentioning

confidence: 99%

Diverse nanomaterials synthesized by laser ablation of pure metals in liquids

Zhang

Liang

2022

Sci. China Phys. Mech. Astron.

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“…This process also increases the current ow through the sample. [36][37][38][39] To determine the rise and decay time constants, one cycle of UV illumination under power intensity of 7.6 mW was tted (Fig. 5c) using bi-exponential expression of the form.…”

Section: I-v-t Characteristics Of the Ni Doped Zno Nps Uv Photodetectormentioning

confidence: 99%

High responsivity and 1/f noise of an ultraviolet photodetector based on Ni doped ZnO nanoparticles

et al. 2018

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“…According to data given in Table IV, 2% Bi-doped CuO photodetector has exhibited the highest responsivity, while 3% Bi-doped CuO photodetector has shown the lowest responsivity. The photo-excited charge carriers formed in the 2% Bi-doped CuO thin film with the advanced crystal structure diffuse to the depletion region without being excessively exposed to traps and defects, increasing the charge accumulation in the depletion region and the photocurrent, which in this case causes high responsivity [61]. The fact that the skin depth is high also confirms this situation.…”

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

confidence: 71%

“…Therefore, photo-excited charge carriers undergo recombination in these defects and traps, which decreases the lifetimes of these charge carriers and causes the photosensitivity to decrease. The photocurrent per active area together with the light power is expressed as the responsivity (R) [59,60,61], i.e.,…”

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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New trends in ZnO nanoparticles/n-Si heterojunction photodetector preparation by pulsed laser ablation in ethanol

Cited by 12 publications

References 17 publications

Diverse nanomaterials synthesized by laser ablation of pure metals in liquids

Diverse nanomaterials synthesized by laser ablation of pure metals in liquids

High responsivity and 1/f noise of an ultraviolet photodetector based on Ni doped ZnO nanoparticles

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

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