Efficiency enhanced solar cells with a Cu2O homojunction grown epitaxially on p-Cu2O:Na sheets by electrochemical deposition

Minami, Tadatsugu; Yamazaki, Jouji; Miyata, Toshihiro

doi:10.1557/mrc.2016.45

Cited by 16 publications

(4 citation statements)

References 23 publications

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“…Elfadill et al [47] showed that Na doping Cu 2 O is a p-type characteristic, which shows that our calculations are in good agreement with experimental data. In addition, Minami et al used Cu 2 O doped Na as p-type in p-n heterojunction and/or homojunction solar cells [48,49].…”

Section: Na and H Doped Cu 2 Omentioning

confidence: 99%

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

Larabi¹,

Mahmoudi²,

Mebarki³

et al. 2019

Condens. Matter Phys.

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We study the hydrogen effect on the electronic, magnetic and optical properties of Cu 2 O in presence of different dopants (Na, Li and Ti). The electronic properties calculations show that hydrogen changes the conductivity of Cu 2 O from p to n-type. The results show that interstitial hydrogen atom prefers to locate in the tetrahedral site in Cu 2 O system and it decreases the band gap value of the later. The Na or Li doping Cu 2 O preserves the p-type conductivity of Cu 2 O, while hydrogen is the source of n-type conductivity in Na or Li doped Cu 2 O systems. Ti doping increases the band gap value of Cu 2 O and makes it an n-type semiconductor. Hydrogen increases the optical transmittance of M doped Cu 2 O.

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Section: Na and H Doped Cu 2 Omentioning

confidence: 99%

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

Larabi¹,

Mahmoudi²,

Mebarki³

et al. 2019

Condens. Matter Phys.

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“…In a typical gold deposition, the polarization is maintained for 20 min. The Cu 2 O epitaxy was developed from previous methods 4 , 33 , and subsequently carried out in a buffered copper sulphate solution while using the Au epitaxial configuration. A 7.98 g quantity of Cu 2 SO 4 , 21.77 g K 2 HPO 4 and 67.5 g lactic acid were dissolved in 250 ml H 2 O and then the pH of the solution was adjusted to 12 by adding 2 M KOH solution, thereby yielding a final solution volume of 1 l. The Cu 2 O layer was deposited by chronopotentiometry in a cylinder cell with an 8 cm diameter with continuous stirring (200 r.p.m.).…”

Section: Methodsmentioning

confidence: 99%

High carrier mobility along the [111] orientation in Cu2O photoelectrodes

Pan,

Dai,

Burton

et al. 2024

Nature

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Solar fuels offer a promising approach to provide sustainable fuels by harnessing sunlight1,2. Following a decade of advancement, Cu2O photocathodes are capable of delivering a performance comparable to that of photoelectrodes with established photovoltaic materials3–5. However, considerable bulk charge carrier recombination that is poorly understood still limits further advances in performance6. Here we demonstrate performance of Cu2O photocathodes beyond the state-of-the-art by exploiting a new conceptual understanding of carrier recombination and transport in single-crystal Cu2O thin films. Using ambient liquid-phase epitaxy, we present a new method to grow single-crystal Cu2O samples with three crystal orientations. Broadband femtosecond transient reflection spectroscopy measurements were used to quantify anisotropic optoelectronic properties, through which the carrier mobility along the [111] direction was found to be an order of magnitude higher than those along other orientations. Driven by these findings, we developed a polycrystalline Cu2O photocathode with an extraordinarily pure (111) orientation and (111) terminating facets using a simple and low-cost method, which delivers 7 mA cm−2 current density (more than 70% improvement compared to that of state-of-the-art electrodeposited devices) at 0.5 V versus a reversible hydrogen electrode under air mass 1.5 G illumination, and stable operation over at least 120 h.

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“…Thus, the value of p of the Cu 2 O:Mn thin-film active layer was estimated to be less than 10 13 cm -3 ; that is, the Cu 2 O:Mn thin film doped with a MnCl 2 concentration of 10 -4 M by ECD is identified as an i-type semiconductor. Consequently, the width of the depletion layer, created in the AZO/Cu 2 O:Mn/Cu 2 O:Na homojunction solar cell fabricated by inserting an i-type Cu 2 O:Mn thin film, was enhanced more than that created in the AZO/Cu 2 O:Na solar cells [19].…”

Section: Resultsmentioning

confidence: 98%

Homojunction Cu₂O Solar Cells Fabricated with Various Impurity-Doped Epitaxially Grown n-Type Cu₂O Thin Film by Electrochemical Deposition

Miyata¹,

Yamazaki²,

Watanabe³

et al. 2017

ECS Trans.

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Efficiency enhanced solar cells with a Cu2O homojunction grown epitaxially on p-Cu2O:Na sheets by electrochemical deposition

Abstract: Abstract

Cited by 16 publications

References 23 publications

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

High carrier mobility along the [111] orientation in Cu2O photoelectrodes

Homojunction Cu₂O Solar Cells Fabricated with Various Impurity-Doped Epitaxially Grown n-Type Cu₂O Thin Film by Electrochemical Deposition

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Efficiency enhanced solar cells with a Cu2O homojunction grown epitaxially on p-Cu2O:Na sheets by electrochemical deposition

Abstract: Abstract

Cited by 16 publications

References 23 publications

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

First principle investigation of hydrogen behavior in M doped Cu2O (M = Na, Li and Ti)

High carrier mobility along the [111] orientation in Cu2O photoelectrodes

Homojunction Cu2O Solar Cells Fabricated with Various Impurity-Doped Epitaxially Grown n-Type Cu2O Thin Film by Electrochemical Deposition

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Product

Resources

About

Homojunction Cu₂O Solar Cells Fabricated with Various Impurity-Doped Epitaxially Grown n-Type Cu₂O Thin Film by Electrochemical Deposition