Evaluation of Back Contact in Spray Deposited SnS Thin Film Solar Cells by Impedance Analysis

Patel, Malkeshkumar; Ray, Abhijit

doi:10.1021/am501027a

Cited by 36 publications

(27 citation statements)

References 44 publications

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“…[49][50][51][52][53] The growth of nanocrystalline CuO thin film can be manipulated by the pyrolysis of aqueous CuCl 2 precursor in the temperature range of 300-400 • C in ambient air according to the following reaction:…”

Section: Resultsmentioning

confidence: 99%

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Patel

Pati

Marathey

et al. 2016

J. Electrochem. Soc.

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Tenorite CuO thin films have been synthesized via spray pyrolysis of aqueous copper(II) chloride solution followed by heat-treatment, exhibited a photocurrent density of 24 mA cm −2 at 0.25 V vs. RHE under AM 1.5G solar irradiation in alkaline electrolyte. This large photocurrent density has been attributed to a drift assisted transport of photo-generated electrons across the semiconductor/electrolyte interface in the annealed films. The tendency of photo-corrosion from the surface of CuO has been reduced substantially without any extra protective layer, simply by adding K 3 Fe(CN) 6 in the electrolyte, which acts as a sacrificial excess-electron scavenging agent. The fabricated electrode exhibited a positive onset potential at 0.25 V vs. RHE even after the electrolyte modification and a stable photocurrent density of more than 40% has been retained after 20 minutes of continuous illumination. The processed photocathode showed a solar to chemical conversion efficiency of 7.85% and 21.5% with and without using an electron scavenging agent, respectively. It holds the promise of using this photocathode in PEC energy conversion, photocatalysis and solar water splitting.In the exploration of terrestrially employable carbon-free energy sources, materials play a central role in the generation and storage of electrical as well as chemical energies. 1,2 Semiconducting materials are especially important to harvest the solar energy due to their bandgap energies matching to that of the visible photons. Photovoltaic (PV) and photoelectrochemical (PEC) methods are the two solar energy conversion modes those utilize semiconductor materials. In order to apply semiconductors in PEC applications, three important aspects must be satisfied: first, capability of providing large photocurrent density; second, a long term stability; and third, the scalability. 3 Several semiconductors, such as have been explored in the PEC applications with majority as catalysts for water splitting. The hunt for novel structure and materials design thus continues to set off the above requirements. Oxides of copper (CuO and Cu 2 O) have recently drawn special attention due to their relative abundance on the earth crust. Majority of the recently reported investigations are focused on Cu 2 O. [25][26][27][28][29][30][31][32] Due to the chemical instability and poor electron transfer, its nano-composites with other oxides or metal catalysts have been attempted. [33][34][35] On the other hand, CuO is chemically more stable than Cu 2 O but there are only few studies on the PEC response of CuO have been reported so far. 36 Among various oxides of copper (viz. Cu 2 O, CuO and Cu 4 O 3 ), tenorite CuO is a chemically stable p-type semiconductors having an indirect bandgap in the range of 1.3-1.7 eV. 37-42 This property makes CuO a promising candidate for solar to chemical energy conversion with maximum possible theoretical photocurrent density in the range of 22-35 mAcm −2 under standard AM 1.5G solar irradiance corresponding to its high and low bandgap values, ...

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Section: Resultsmentioning

confidence: 99%

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Patel

Pati

Marathey

et al. 2016

J. Electrochem. Soc.

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“…225 Other reports, based on impedance spectroscopy measurements, indicate Mo performs poorly due to increased series resistance and high rates of tunnelling assisted recombination and have recommended Cu as a viable alternative. 226 There has been some controversy surrounding the reports of zincblende structured SnS (F% 43mm) deposited as microparticles and thin-films ( Fig. 4c).…”

Section: Tin(ii) Chalcogenidesmentioning

confidence: 99%

Beyond methylammonium lead iodide: prospects for the emergent field of ns²containing solar absorbers

2017

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The field of photovoltaics is undergoing a surge of interest following the recent discovery of the lead hybrid perovskites as a remarkably efficient class of solar absorber. Of these, methylammonium lead iodide (MAPI) has garnered significant attention due to its record breaking efficiencies, however, there are growing concerns surrounding its long-term stability. Many of the excellent properties seen in hybrid perovskites are thought to derive from the 6s electronic configuration of lead, a configuration seen in a range of post-transition metal compounds. In this review we look beyond MAPI to other ns solar absorbers, with the aim of identifying those materials likely to achieve high efficiencies. The ideal properties essential to produce highly efficient solar cells are discussed and used as a framework to assess the broad range of compounds this field encompasses. Bringing together the lessons learned from this wide-ranging collection of materials will be essential as attention turns toward producing the next generation of solar absorbers.

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“…S5, †; this process was explored for the development of a superstrate congured SnS solar cell). 31,32 Please refer to the ESI, Fig. S1 and S2, † where structural and optical characterizations of the In 2 S 3 buffer layer have been shown, respectively.…”

Section: Photoelectrochemical and Heterojunction Solar Cellmentioning

confidence: 99%

Magnetron sputtered Cu doped SnS thin films for improved photoelectrochemical and heterojunction solar cells

Patel

Ray

2014

RSC Adv.

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Evaluation of Back Contact in Spray Deposited SnS Thin Film Solar Cells by Impedance Analysis

Cited by 36 publications

References 44 publications

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Beyond methylammonium lead iodide: prospects for the emergent field of ns²containing solar absorbers

Magnetron sputtered Cu doped SnS thin films for improved photoelectrochemical and heterojunction solar cells

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Evaluation of Back Contact in Spray Deposited SnS Thin Film Solar Cells by Impedance Analysis

Cited by 36 publications

References 44 publications

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Highly Photoactive and Photo-Stable Spray Pyrolyzed Tenorite CuO Thin Films for Photoelectrochemical Energy Conversion

Beyond methylammonium lead iodide: prospects for the emergent field of ns2containing solar absorbers

Magnetron sputtered Cu doped SnS thin films for improved photoelectrochemical and heterojunction solar cells

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Beyond methylammonium lead iodide: prospects for the emergent field of ns²containing solar absorbers