Enhanced Environmental Stability Coupled with a 12.5% Power Conversion Efficiency in an Aluminum Oxide-Encapsulated n-Graphene/p-Silicon Solar Cell

Serdar Yavuz; Erick M. Loran; Nirjhar Sarkar; David P. Fenning; Prabhakar R. Bandaru

doi:10.1021/acsami.8b16322

Enhanced Environmental Stability Coupled with a 12.5% Power Conversion Efficiency in an Aluminum Oxide-Encapsulated n-Graphene/p-Silicon Solar Cell

Serdar Yavuz
, Erick M. Loran
, Nirjhar Sarkar
, David P. Fenning
, Prabhakar R. Bandaru

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A significant improvement in the power conversion efficiency (PCE) and the environmental stability of n-Graphene/p-Si solar cells is indicated through effective n-doping of graphene, using low work function oxide capping layers. AlO_x, deposited through atomic layer deposition, is particularly effective for such doping and in addition serves as an antireflection coating and a cell encapsulating layer. It is shown that the related charge transfer doping and interfacial engineering was crucial to achieve a record PCE of 12.5%. The work indicates a path forward, through work function engineering, for further efficiency gains in Gr-based solar cells.

Original language	English
Pages (from-to)	37181-37187
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	43
DOIs	https://doi.org/10.1021/acsami.8b16322
State	Published - Oct 31 2018
Externally published	Yes

Funding

This work was supported by a grant (CBET 1606192) from the National Science Foundation (NSF). D.P.F. acknowledges the support from UC Solar. We would also like to thank A. Zaretski of Grolltex Inc., for graphene samples.

Keywords

Raman spectroscopy
Schottky junction
aluminum oxide
graphene
n-doping
solar cell
stability

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10.1021/acsami.8b16322

Cite this

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title = "Enhanced Environmental Stability Coupled with a 12.5\% Power Conversion Efficiency in an Aluminum Oxide-Encapsulated n-Graphene/p-Silicon Solar Cell",

abstract = "A significant improvement in the power conversion efficiency (PCE) and the environmental stability of n-Graphene/p-Si solar cells is indicated through effective n-doping of graphene, using low work function oxide capping layers. AlOx, deposited through atomic layer deposition, is particularly effective for such doping and in addition serves as an antireflection coating and a cell encapsulating layer. It is shown that the related charge transfer doping and interfacial engineering was crucial to achieve a record PCE of 12.5\%. The work indicates a path forward, through work function engineering, for further efficiency gains in Gr-based solar cells.",

keywords = "Raman spectroscopy, Schottky junction, aluminum oxide, graphene, n-doping, solar cell, stability",

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doi = "10.1021/acsami.8b16322",

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AU - Loran, Erick M.

AU - Sarkar, Nirjhar

AU - Fenning, David P.

AU - Bandaru, Prabhakar R.

PY - 2018/10/31

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N2 - A significant improvement in the power conversion efficiency (PCE) and the environmental stability of n-Graphene/p-Si solar cells is indicated through effective n-doping of graphene, using low work function oxide capping layers. AlOx, deposited through atomic layer deposition, is particularly effective for such doping and in addition serves as an antireflection coating and a cell encapsulating layer. It is shown that the related charge transfer doping and interfacial engineering was crucial to achieve a record PCE of 12.5%. The work indicates a path forward, through work function engineering, for further efficiency gains in Gr-based solar cells.

AB - A significant improvement in the power conversion efficiency (PCE) and the environmental stability of n-Graphene/p-Si solar cells is indicated through effective n-doping of graphene, using low work function oxide capping layers. AlOx, deposited through atomic layer deposition, is particularly effective for such doping and in addition serves as an antireflection coating and a cell encapsulating layer. It is shown that the related charge transfer doping and interfacial engineering was crucial to achieve a record PCE of 12.5%. The work indicates a path forward, through work function engineering, for further efficiency gains in Gr-based solar cells.

KW - Raman spectroscopy

KW - Schottky junction

KW - aluminum oxide

KW - graphene

KW - n-doping

KW - solar cell

KW - stability

UR - https://www.scopus.com/pages/publications/85055137605

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JO - ACS Applied Materials and Interfaces

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IS - 43

ER -

Enhanced Environmental Stability Coupled with a 12.5% Power Conversion Efficiency in an Aluminum Oxide-Encapsulated n-Graphene/p-Silicon Solar Cell

Abstract

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Keywords

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