Probing the photovoltaic properties of Ga-doped CdS–Cu<sub>2</sub>S core–shell heterostructured nanowire devices

Lu, Ming-Yen; Hong, Meng-Hsiang; Ruan, Yen-Min; Lu, Michael S.-C.

doi:10.1039/c8cc10316j

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…Thus, a p-type semiconductor is sought to construct a p–n heterojunction for recombination with n-type CdS to solve the defects of poor charge mobility and a short lifetime. Cu 2 S is a typical p-type semiconductor; its low cost and good light absorption ability have been widely concerned in various research fields. − The properties of the photocatalyst are affected by its shape and size. , Especially, Zhang et al reported the synthesis of a snowflake-like Cu 2 S system structure using the template-free method . Because of the high absorbance and surface area of Cu 2 S snowflakes, they exhibit efficient photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

Dai

Pan

et al. 2020

ACS Appl. Nano Mater.

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Constructing a cocatalyst-free semiconductor catalyst with high catalytic efficiency has great significance to photocatalytic hydrogen (H 2 ) production. Herein, by incorporating diethylenetriamine (DETA) into inorganic materials (CdS), an organic−inorganic hybrid, CdS-DETA (CD), and a snowflake-like Cu 2 S p−n heterojunction were designed by the hydrothermal synthesis method. The photocatalytic H 2 generation rate of Cu 2 S/ CD (CU/CD) can reach 9.00 mmol•g −1 •h −1 , which is 1.25, 5.03, and 6.12 times higher than that of H 2 produced by Pt/CD, CD, and CdS nanorods (CdS NRs), respectively. Under the action of the organic molecule DETA, the photocorrosion of CdS is effectively inhibited. The Cu 2 S snowflakes and the organic− inorganic hybrid CD tight-contact interface and the p−n heterojunction improve the charge separation efficiency in the composite and enhance the photocatalytic activity. This work designed a type of photocatalyst heterojunction to provide an effective strategy for turning solar energy into a green and clean energy.

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Section: Introductionmentioning

confidence: 99%

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

Dai

Pan

et al. 2020

ACS Appl. Nano Mater.

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“…Taur et al (2012) found the conversion efficiency of the CdS/Cu 2 S solar cell produced by chemical method as η = 0.24 in the annealed sample and η = 0.09 in the non-annealed sample [7]. Lu et al (2019) calculated the short circuit current, open circuit voltage, fill factor and power conversion efficiency of the n-CdS/p-Cu 2 S solar cell produced by the chemical vapor deposition method as 0.152 nA, 0.25 V, 0.445 and 0.405%, respectively [38].…”

Section: Resultsmentioning

confidence: 99%

The investigation of stability of n-CdS/p-Cu₂S solar cells prepared by cold substrate method

Manir¹,

Nevruzoğlu²,

Tomakin³

2021

Semicond. Sci. Technol.

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In this study, two different n-CdS/p-Cu2S solar cells were prepared by evaporating Cu at different substrate temperatures (200 K and 300 K) by vacuum evaporation method on a single crystal CdS semiconductor. Field emission scanning electron microscope images showed that the Cu layer obtained at a temperature of 200 K was composed of nanoparticles in accordance with the soliton growth mechanism. Cu film thickness was determined as 395 ∓ 0.76 nm at 300 K substrate temperature and 187 ∓ 0.45 nm at 200 K substrate temperature. The current–voltage (I–V) and capacitance–voltage (C–V) characteristics of the solar cells were examined for 12 weeks in dark and light environments. Open-circuit voltage (V oc), short-circuit current (I sc), maximum power (P max), filling factor and efficiency (η) were calculated from I–V measurements. For the prepared solar cells, the highest efficiency value was obtained in the 7th week (η= 0.1360) at 200 K substrate temperature, while it was obtained in the 5th week (η = 0.0384) at 300 K substrate temperature. From C–V measurements, donor density (N d) and barrier potential (V bi) were calculated. The solar cell produced at 200 K substrate temperature has higher donor density (1st week 2.99 × 1016 cm−3) and barrier potential values (12th week 0.411 V). At the end of the 12-week period, the deterioration rate of solar cells created at 200 K and 300 K substrate temperatures was 51% and 94%, respectively.

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“…As depicted in Figure 1, for the blank ZnS, the characteristic peaks of ZnS at 28.6 • , 47.6 • and 56.5 • were attributed to the cubic ZnS crystal planes (111), ( 220) and (311) (PDF#65-0309), respectively [23]. For the blank CdS, the CdS characteristic peaks located at 24.8 • , 26.5 • , 28.2 • and 43.7 • were attributed to the crystal planes (100), (002), ( 101) and (110) of hexagonal CdS (PDF#89-2944 CdS), respectively [24]. For CdS@ZnS samples, both the characteristic peaks of CdS and ZnS could be observed [18].…”

Section: Characterization Of Cds@zns Samplesmentioning

confidence: 99%

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

Huang

et al. 2023

Catalysts

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CdS@ZnS core shell nanocomposites were prepared by a one-pot hydrothermal route. The morphology of the composite was tuned by simply changing the Zn2+ precursor concentration. To characterize the samples prepared, various techniques were employed, including XRD, FESEM, TEM, XPS and UV-vis DRS. The band gaps of CdS and ZnS were measured to be 2.26 and 3.32 eV, respectively. Compared with pure CdS, the CdS@ZnS samples exhibited a slight blue shift, which indicated an increased band gap of 2.29 eV. The CdS@ZnS core shell composites exhibited efficient photocatalytic performance for H2 generation under simulated sunlight illumination in contrast to pure CdS and ZnS. Additionally, an optimized H2 generation rate (14.44 mmol·h−1·g−1cat) was acquired at CdS@ZnS-2, which was approximately 4.6 times greater than that of pure CdS (3.12 mmol·h−1·g−1cat). Moreover, CdS@ZnS heterojunction also showed good photocatalytic stability. The process of charge separation over the photocatalysts was investigated using photoelectrochemical analysis. The findings indicate that the CdS@ZnS nanocomposite has efficient charge separation efficiency. The higher H2 generation activity and stability for CdS@ZnS photocatalysts can be attributed to the intimate interface in the CdS@ZnS core–shell structure, which promoted the light absorption intensity and photoinduced charge separation efficiency. It is expected that this study will offer valuable insights into the development of efficient core shell composite photocatalysts.

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Probing the photovoltaic properties of Ga-doped CdS–Cu₂S core–shell heterostructured nanowire devices

Abstract: In this study Ga-doped cadmium sulfide (CdS) nanowires (NWs) were grown through chemical vapor deposition.

Cited by 6 publications

References 28 publications

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

The investigation of stability of n-CdS/p-Cu₂S solar cells prepared by cold substrate method

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

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Probing the photovoltaic properties of Ga-doped CdS–Cu2S core–shell heterostructured nanowire devices

Abstract: In this study Ga-doped cadmium sulfide (CdS) nanowires (NWs) were grown through chemical vapor deposition.

Cited by 6 publications

References 28 publications

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu2S Snowflake Microparticles for Photocatalytic Hydrogen Production

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu2S Snowflake Microparticles for Photocatalytic Hydrogen Production

The investigation of stability of n-CdS/p-Cu2S solar cells prepared by cold substrate method

Tailoring Morphology in Hydrothermally Synthesized CdS/ZnS Nanocomposites for Extraordinary Photocatalytic H2 Generation via Type-II Heterojunction

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Probing the photovoltaic properties of Ga-doped CdS–Cu₂S core–shell heterostructured nanowire devices

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

Diethylenetriamine-Functionalized CdS Nanoparticles Decorated on Cu₂S Snowflake Microparticles for Photocatalytic Hydrogen Production

The investigation of stability of n-CdS/p-Cu₂S solar cells prepared by cold substrate method