All-oxide solar cells based on electrodeposited Cu2O absorber and atomic layer deposited ZnMgO on precious-metal-free electrode

Kaur, Jatinder; Bethge, Ole; Wibowo, Rachmat Adhi; Bansal, Neha; Bauch, Martin; Hamid, Raad; Bertagnolli, E.; Dimopoulos, Théodoros

doi:10.1016/j.solmat.2016.12.017

Cited by 46 publications

(25 citation statements)

References 56 publications

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“…Both samples contain the characteristic peaks of Mg 1 s, C 1 s, O 1 s, Zn 2p 3/2 and 2p 1/2. From Figure b, we observe that the characteristic peak of Mg 1 s is observed at about 1304.3 eV, which corresponds to the Mg‐O binding energy . The energy spectra of C 1 s appears two broad peaks at 284.8 eV and 289.0 eV (as shown Figure c), coming from the C‐C bonds and C‐O bonds, respectively.…”

Section: Resultsmentioning

confidence: 79%

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

Zhao

Fang

Chen

et al. 2018

Applied Organom Chemis

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Graphene oxide/Mg‐doped ZnO/tungsten oxide quantum dots composites (WQGOMZ) were prepared through co‐precipitation method, and were studied by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray photoelectron spectroscopy (XPS), Fluorescence spectra (FL), and UV–vis diffuse reflection spectra. Furthermore, the photocatalytic activity of resultant WQGOMZ was evaluated under nature sunlight. Experimental results showed that WO3QDs can remarkably heighten the photocatalytic activity of GOMZ composite, in which is nearly 6.58 times higher than that of GOMZ composite. Simultaneously, WQGOMZ composites possess optical memory ability and maintain high photocatalytic stability for more than 40 days. The enhanced photocatalytic activity and optical memory ability are attributed to the effective synergistic effect between ZnO and WO3QDs.

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Section: Resultsmentioning

confidence: 79%

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

Zhao

Fang

Chen

et al. 2018

Applied Organom Chemis

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“…Cu2O layers can be produced from Cu sheets by no-vacuum techniques, such as thermal oxidation. 1 Zhu (2004) has conducted copper oxide kinetic studies in the temperature range of 350 ° C to 550 ° C for the formation of copper oxide. 2 In addition, at a temperature of 200 °C for 10 minutes in the air had started to form CuO copper to a temperature of 300 ° C to form Cu2O.…”

Section: Introductionmentioning

confidence: 99%

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

Fadlly

Putra

2020

Jurnal Fisika dan Aplikasinya

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Current-Voltage Characteristics of solar cells p-n junction ZnO and TiO2 parallel in the Cu2O layer has been determined using solar irradiation. Metal oxide has been used as a semiconductor material, such as ZnO and TiO 2 is an n-type semiconductor. The material has gap energy of 3.37 eV and 3.2 eV. Thermal oxidation is applied to commercial Cu plates for 60 minutes to produce Cu2O layers as p-type semiconductors. The process varies in temperature, namely 300, 400, and 500 °C. The process of thermal oxidation on Cu plates at a temperature of 300 °C increases the impurity in the Cu2O layer. The impurity layer is CuO. Then the CuO layer formed decreases with increasing temperature thermal oxidation. CuO layer increases the efficiency of solar cells p-n junction TiO2-ZnO parallel in the layer Cu2O. The results of measurements with sunlight showed that the TiO2-ZnO/Cu2O (300) samples had the highest solar cell efficiency, which was 0.28 %.

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“…The material has a band gap of * 2 eV [15], which means that a maximum efficiency of 20% [16] (Shockley-Queisser limit) can be achieved. Cu 2 O is mainly prepared by Cu sheet oxidation at high temperatures ([ 1000°C) [17][18][19][20] and by electrochemical deposition (ECD) at temperatures well below 100°C [7,8,[21][22][23][24]. The first method is particularly energy-intensive, but delivers high power conversion efficiencies, with the current record being 8.1% [17].…”

Section: Introductionmentioning

confidence: 99%

“…Alternatively, the electron affinity of materials such as ZnO can be modified by alloying them, either on the anion or the cation site [31], to decrease the large conduction band offset of 0.9 eV for ZnO/Cu 2 O heterojunctions [30,32]. For example, Mg doping of ZnO lowers the electron affinity and widens the band gap, leading to an improved conduction band alignment with the Cu 2 O absorber and a higher opencircuit voltage compared to intrinsic ZnO [24,33,34]. However, film compositions containing more than 20 mol % of Mg are shown to result in a drastic deterioration of the PV performance [24,33], that may be related to deep-level traps [35].…”

Section: Introductionmentioning

confidence: 99%

“…For example, Mg doping of ZnO lowers the electron affinity and widens the band gap, leading to an improved conduction band alignment with the Cu 2 O absorber and a higher opencircuit voltage compared to intrinsic ZnO [24,33,34]. However, film compositions containing more than 20 mol % of Mg are shown to result in a drastic deterioration of the PV performance [24,33], that may be related to deep-level traps [35]. In some cases the threshold for PV performance decrease is reported to be lower, at * 10 mol % Mg [24,33,34].…”

Section: Introductionmentioning

confidence: 99%

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Solution-processed all-oxide solar cell based on electrodeposited Cu2O and ZnMgO by spray pyrolysis

et al. 2018

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The paper reports on all-solution-processed, all-oxide solar cells, based on an electrodeposited Cu 2 O absorber. The transparent indium-doped zinc oxide (IZO) contact and buffer layers of zinc oxide or zinc magnesium oxide (Zn 1-x Mg x O) were fabricated by ultrasonic spray pyrolysis. The cells were completed with graphite paste top contacts. The focus was set on using exclusively environment-friendly and low-cost raw materials, deposited from aqueous solutions without organic solvents. The latter is especially important for spray pyrolysis, where high process temperatures restrict the use of flammable solvents. The developed spray pyrolysis recipes yielded conductive (25 X/sq.) and transparent IZO and various compositions of transparent Zn 1-x Mg x O layers, with a linear dependence of the energy band gap (3.28-3.50 eV) as a function of the Mg content (0-16 mol %), as seen for layers deposited by vacuum-based techniques. Solar cells with a Zn 0.88 Mg 0.12 O buffer showed an improved photovoltaic performance compared to cells with ZnO buffer or without buffer, reaching a power conversion efficiency of 0.67% with a short-circuit current density of 3.76 mA/cm 2 , an open-circuit voltage of 0.34 V and a fill factor of 52.7%. The study correlated the improved cell performance with structural and electronic properties of the heterojunction.

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All-oxide solar cells based on electrodeposited Cu2O absorber and atomic layer deposited ZnMgO on precious-metal-free electrode

Cited by 46 publications

References 56 publications

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

Solution-processed all-oxide solar cell based on electrodeposited Cu2O and ZnMgO by spray pyrolysis

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All-oxide solar cells based on electrodeposited Cu2O absorber and atomic layer deposited ZnMgO on precious-metal-free electrode

Cited by 46 publications

References 56 publications

WO3 Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

WO3 Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

CURRENT-VOLTAGE CHARACTERISTICS OF SOLAR CELLS p-n JUNCTION ZnO AND TiO2 PARAREL ON Cu2O LAYER

Solution-processed all-oxide solar cell based on electrodeposited Cu2O and ZnMgO by spray pyrolysis

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Product

Resources

About

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight

WO₃ Quantum Dots Decorated GO/Mg‐doped ZnO Composites for Enhanced Photocatalytic Activity under Nature Sunlight