研究目的
To explore new architectures of transparent conductive electrodes (TCEs) incorporating graphene monolayers in different configurations to improve the performance of silicon-heterojunction (SHJ) cell front transparent contacts.
研究成果
The study demonstrates that combining graphene monolayers with TCOs, particularly ITO, can significantly improve the electrical and optical properties of TCEs for SHJ solar cells. The optimal configuration involves placing three graphene monolayers on top of an 80-nm-thick ITO film, achieving low sheet resistance and high conductance while also reducing reflectance.
研究不足
The study highlights the potential damage to graphene monolayers during the sputtering process of TCO thin films and the possible formation of aluminum carbide when graphene is in contact with aluminum-containing compounds, which could affect the electrical performance of the TCEs.
1:Experimental Design and Method Selection:
The study involved combining different transparent-conductive-oxide (TCO) thin films with graphene monolayers in various configurations to evaluate their optoelectronic properties.
2:Sample Selection and Data Sources:
Graphene was synthesized on a commercial copper foil and transferred to different substrates. TCO thin films were fabricated using a sputtering system.
3:List of Experimental Equipment and Materials:
A cold-wall CVD reactor for graphene synthesis, a sputtering system for TCO fabrication, and various characterization tools including Raman spectroscopy and spectrophotometry.
4:Experimental Procedures and Operational Workflow:
The process included graphene synthesis, transfer to substrates, TCO deposition, and characterization of the resulting TCEs.
5:Data Analysis Methods:
The electrical and optical properties of the TCEs were analyzed using transmission-line-model measurements and spectrophotometry.
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