研究目的
To develop a planar‐type concentrating photovoltaic system with cylindrical lenses directly integrated with thin flexible GaAs solar cells, aiming to reduce the cost of semiconductor materials and eliminate the need for bulky or heavy dual‐axis solar trackers.
研究成果
The planar‐type concentrating photovoltaic system with cylindrical lenses directly integrated with thin flexible GaAs solar cells demonstrated the feasibility of generating electricity throughout the day with minimal actuation. The system maintained a uniform beam width for different incident angles and did not require additional tracking efforts to compensate for the revolution of the earth.
研究不足
The study acknowledges the shadowing effect at high incident angles due to close‐packed neighboring lenses and the need for comprehensive assessment of moisture penetration through encapsulation layers for long‐term use.
1：Experimental Design and Method Selection:
The study involved the design of a planar‐type concentrating photovoltaic system using cylindrical lenses integrated with flexible GaAs solar cells. Computational and experimental studies were conducted to evaluate the system's performance at various incident angles.
2：Sample Selection and Data Sources:
Flexible GaAs solar cells were fabricated and integrated onto cylindrical lenses. The performance of these solar cells was measured under one sun illumination and at various incident and elevation angles.
3：List of Experimental Equipment and Materials:
The study used a CPV solar simulator, a source/measure unit, a tilting stage, a motorized linear stage, and a microcontroller unit (MCU) for tracking and measurement purposes.
4：Experimental Procedures and Operational Workflow:
The solar cells were integrated onto cylindrical lenses using a custom‐built aligning device. The tracker's performance was evaluated by measuring the short‐circuit current at various angles and under outdoor conditions.
5：Data Analysis Methods:
The short‐circuit current and other electrical properties of the solar cells were analyzed to assess the system's performance. The impact of shadowing and cosine projection loss was also considered.
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