Hetero-structure p-i-n solar cell with high efficiency

Mil’shtein, S.; Pillai, A.; Nair, Dhruv; Karumuri, A.

doi:10.1063/1.4878304

Cited by 2 publications

(3 citation statements)

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“…The p-i-n junction has opened up considerable opportunities in the fields of photodetectors, − photoelectric devices, , and solar cells − due to its exclusive properties. The p-i-n junction is transformed from the p-n junction, where an intrinsic/insulating layer (i-layer) is inserted between the n-type semiconductor region and the p-type semiconductor region.…”

Section: Introductionmentioning

confidence: 99%

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Jiang

Wang

et al. 2021

ACS Appl. Energy Mater.

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The p-i-n junction structure has garnered great interest from researchers due to its increased photoactive area and wider space charger region compared with that of the p-n junction. Herein the ultrawide bandgap (∼6.7 eV) semiconductor alumina (Al2O3) has been introduced to construct a p-i-n junction with ZnO and NiO. ZnO–Al2O3–NiO powders are suitable for electrolyte membrane material of low-temperature solid oxide fuel cells (LT-SOFCs). The insulating Al2O3 brings a doubled depletion region and more effective charge separation compared with the p-n junction consisting of ZnO and NiO. The fuel cell based on the p-i-n junction membrane material delivers an enhanced maximum power density (MPD) of 917 mW cm–2 along with a high open-circuit voltage (OCV) of 1.013 V at 550 °C. An analysis based on the space charge region and energy band alignment in the p-i-n junction is proposed to account for the appreciable cell performance and ionic conductivity, as well as the electron blocking and charge separation ability. This study presents a practical p-i-n junction design based on ZnO–Al2O3–NiO via a solution process for LT-SOFC electrolyte material and sheds light on the extensive exploration of p-i-n junctions applied in LT-SOFCs.

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Section: Introductionmentioning

confidence: 99%

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Jiang

Wang

et al. 2021

ACS Appl. Energy Mater.

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“…For this reason, higher band gap materials are said to generate less heat. Successful usage of various energy gaps was demonstrated in multijunction cascade solar cell structure with tunnel junction [4] and, more recently, in design of AlGaAs/GaAs cascade structure [5]. It has been proved that large band gaps improve the cell efficiency at higher temperature due to smaller temperature coefficients for reverse saturation current (dark current).…”

Section: Introductionmentioning

confidence: 99%

“…We use thermodynamic modeling in predicting the temperature rise in AlGaAs/AlGaAs/GaAs cascade p-i-n structure [5] under solar irradiance of AM1.5. We propose a model based on quantization and continuity equation to calculate photocurrent for a superlattice structure.…”

Section: Introductionmentioning

confidence: 99%

Limiting Solar Cell Heat-Up by Quantizing High Energy Carriers

Devarakonda

Mil’shtein

2012

ISRN Renewable Energy

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Under solar radiation the efficiency of solar cells decreases as a result of heating up by short wavelengths photons. To minimize loss of efficiency with increasing temperatures, we designed a heterostructure AlGaAs/AlGaAs/GaAs cascaded p-i-n solar cells with 30 A wide quantum wells and 10Å wide barriers in p and i regions. Our modeling demonstrated that quantizing high energy carriers in the superlattice prevents scattering of excessive electron energies, thus decreasing the temperature rise per unit of time by a factor of 2. The modeling based on continuity equations included integration of absorption coefficients for various wavelengths and summarizes all thermodynamic heat exchanges in the designed solar cell.

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Hetero-structure p-i-n solar cell with high efficiency

Cited by 2 publications

References 0 publications

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Accelerated Proton Transport Based on a p-i-n Heterostructure Membrane for Low-Temperature Solid Oxide Fuel Cells

Limiting Solar Cell Heat-Up by Quantizing High Energy Carriers

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