| 皮秒脉冲激光辐照太阳能电池损伤特性实验研究(特邀) |
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| 引用本文： | 周伟静,文明,常浩,陈一夫,姬刚,马英杰,简智龙,廖雨杰.皮秒脉冲激光辐照太阳能电池损伤特性实验研究(特邀)[J].红外与激光工程,2023,52(2):20210870-1-20210870-10. |
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| 作者姓名： | 周伟静 文明 常浩 陈一夫 姬刚 马英杰 简智龙 廖雨杰 |
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| 作者单位： | 航天工程大学 宇航科学与技术系 激光推进及其应用国家重点实验室，北京 101416 |
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| 基金项目： | 国家自然科学基金(11602304, 11502301) |
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| 摘 要： | 以皮秒脉宽激光多脉冲损伤太阳能电池为背景，通过激光烧蚀电池前后表面形貌、电池伏安特性、电致发光特性获得损伤特性。采用脉宽15 ps、波长1 064 nm皮秒脉冲激光辐照三结GaAs太阳能电池进行实验。通过重频调节改变激光辐照功率，对太阳能电池栅线与非栅线部位在激光辐照下的损伤特性进行分析。实验发现辐照非栅线部位时，尽管激光光斑较小，但电池内部材料已经发生损伤，主要是由于电池内部材料有序结构的破坏逐渐增大，尤其是激光功率越高时，内部损伤面积越大。当激光辐照栅线部位时，栅线部位受热熔断会极大影响太阳能电池对载流子的吸收，从而降低电池的光电转换能力，进而影响太阳能电池的电性能，使得激光辐照栅线部位损伤效果强于辐照非栅线部位。
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| 关 键 词： | 激光辐照 皮秒脉冲激光 太阳能电池 伏安特性 表面损伤形貌 电致发光图像 |
| 收稿时间： | 2022-10-13 |
Damage characteristics of solar cells irradiated by picosecond pulsed lasers (invited) |
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| Affiliation: | State Key Laboratory of Laser Propulsion & Its Application, Department of Aerospace Science and Technology, Space Engineering University, Beijing 101416, China |
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| Abstract: | Based on the background that picosecond pulse width laser with multi-pulses damaging the solar cells, we use three methods that are the surface morphology, voltammetry characteristics and electrolumi-nescence of solar cells to obtain the damage characteristics of solar cells with the laser before and after laser ablation. A three-junction GaAs solar cell with pulse width of 15 ps and wavelength of 1 064 nm is irradiated by picosecond pulsed laser. By changing the laser irradiation power through repetition frequency regulation, the damage characteristics of grid line and non-grid line of solar cell under laser irradiation are analyzed. The experimental results show that, although the laser spot is small, the material inside the battery has been damaged. It's mainly because the damage of the ordered structure of the material inside the battery is gradually increased. When the laser power is higher, the internal damage area is larger. When the gate line is irradiated by laser, the fusion of the gate line will greatly affect the absorption of the carriers by the solar cell, thus reducing the photoelectric conversion ability of the solar cell, and then affecting the electrical performance of the solar cell, so that the damage effect of the gate line is stronger than that of the non-gate line. |
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