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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title Enhancement of Efficiency in Nanostructured-Si Solar Cells by Employing Doped-graphene Transparent Conductive Electrodes
Author(s) Suk-Ho Choi
On-Site Speaker (Planned) Suk-Ho Choi
Abstract Scope To overcome small/indirect-bandgap nature of Si, a lot of efforts have been made to employ nanostructured Si such as Si quantum dots (SQDs) or porous Si (PSi) in optoelectronic devices based on quantum confinement effect. We first report PSi heterojunction solar cells with 4.0 % power conversion efficiency (PCE) by employing graphene transparent conductive electrodes (TCEs) doped with Ag nanowires (Ag NWs). Co-doping of graphene with Au nanoparticles and bis(trifluoromethanesulfonyl)-amide enhances the PCE to 10.7 %. We also employ graphene TCEs doped with AuCl<SUB>3</SUB> or Ag NWs for SQDs-based solar cells, showing 16.2% PCE, much larger than ever achieved in SQDs solar cells with metal TCEs as well as in bulk-Si solar cells with graphene TCEs. The encapsulation of the doped graphene TCEs with another graphene layer prevents the doping elements from being desorbed, thereby making the PCE higher, its doping dependence more evident, and the long-term performance more stable.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Low-cost and Novel Strategy for Inverted Pyramid Arrays Texturing of DWS mc-Si Wafers
A Review of Solar Silicon Recycling
Boron Removal from Ferrosilicon Alloy via Slag Treatment
CRYSTAL GROWTH MECHANISM OF Si IN HYPEREUTECTIC Al-Si MELT DURING THE ELECTROMAGNETIC DIRECTIONAL SOLIDIFICATION
Enhancement of Efficiency in Nanostructured-Si Solar Cells by Employing Doped-graphene Transparent Conductive Electrodes
High Temperature Pressure Filtration Applying for Separation of Silicon and Liquation Agent
Influence of Chemical and Heat Treatment on the Properties of Disi Raw Sandstones in Jordan
Leaching of Indium from ITO Present in Amorphous Silicon Photovoltaic Modules
Removal Impurities from Metallurgical Silicon by Slag Treatment Combined with Acid Leaching
Solar Silicon by Direct Carbothermic Reduction - Review and Outlook
Structure Nature of Boron Removal from Silicon in Slagging Refining: A Raman Spectroscopy and NMR Spectroscopy Study
The Effect of Rapid Heat Treatment on Crystal Defect Evolution and Electrical Properties of the Original High Efficient Polycrystalline Silicon
The Mechanism of Boron Removal from Silicon Alloy by Electric Field Using Slag Treatment
Thermo-Calc of the Phase Diagram of Calcium Silicon (Ca-Si) System
Thermo-Calc of the Phase Diagram of the Fe-Si System
Three-Dimensional Crystal-Plasticity based Model for Intrinsic Stresses in Multi-Junction Photovoltaic
Ultrathin Crystalline Silicon Solar Cell Preparation through Molten Salt Electrolysis

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