研究目的
Investigating the performance of silicon heterojunction (SHJ) solar cells with different carbon contents in the front doped layer under various climate conditions to optimize energy harvesting efficiency.
研究成果
Incorporating a certain content of carbon in the front (n) layer of SHJ solar cells can lead to a relative gain of 0.4%–0.8% in harvesting efficiency across various climates, despite a decrease in efficiency at standard test conditions. This highlights the importance of optimizing solar cell designs for actual operating conditions rather than just STC.
研究不足
The study focuses on SHJ solar cells with specific modifications (carbon content in the front doped layer) and may not generalize to all solar cell technologies. The experimental conditions simulate but do not fully replicate all possible outdoor operating conditions.
1：Experimental Design and Method Selection:
The study involved fabricating SHJ solar cells with varying carbon concentrations in the front doped layer to assess their performance under different temperatures and illumination intensities.
2：Sample Selection and Data Sources:
Solar cells were fabricated using float-zone, n-type silicon wafers, with a-Si layers deposited via plasma-enhanced chemical vapor deposition.
3：List of Experimental Equipment and Materials:
Equipment included a plasma-enhanced chemical vapor deposition reactor, magnetron sputtering for ITO layers and rear silver metallization, and screen printing for front metallization.
4：Experimental Procedures and Operational Workflow:
I–V characteristics were measured at various temperatures and illumination intensities to simulate different operating conditions.
5：Data Analysis Methods:
Efficiency maps were generated to compare performance across conditions, and harvesting efficiency was calculated for various climates.
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