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Energy-tunable photon-enhanced thermal tunneling electrons for intrinsic adaptive full spectrum solar energy conversion
Applied Physics Letters ( IF 3.5 ) Pub Date : 2020-02-10 , DOI: 10.1063/1.5128820
Yicong Chen 1 , Shaozhi Deng 1 , Ningsheng Xu 1 , Jun Chen 1
Affiliation  

Considering that the actual terrestrial solar irradiance is dynamically changing with the atmosphere, the overall efficiencies of most current solar cells are much lower than the reported static values that are based on a standard solar spectrum. The realizations of solar cells, which can maintain high efficiency under variable solar irradiance, are necessary for further improvement of solar energy conversion. In this work, a metal-insulator-semiconductor (MIS) structure based photon-enhanced thermionic energy converter (PETEC) has been proposed for intrinsic adaptive full spectrum solar energy conversion. The basic idea is to form the thermionic electron with desired energy by the photon-enhanced thermal tunneling process. Investigations on its fundamental performance indicate that the MIS-PETEC can have an overall output energy improvement of at least 0.8%, 2.5%, and 3% in typical sunny, rainy, and cloudy days compared to the normal PETEC. Additionally, the total output energy over a year can be improved by at least 3%. These results offer an alternate technique for intrinsic adaptive full spectrum solar energy conversion, which is helpful for the development of next generation high performance solar cells.Considering that the actual terrestrial solar irradiance is dynamically changing with the atmosphere, the overall efficiencies of most current solar cells are much lower than the reported static values that are based on a standard solar spectrum. The realizations of solar cells, which can maintain high efficiency under variable solar irradiance, are necessary for further improvement of solar energy conversion. In this work, a metal-insulator-semiconductor (MIS) structure based photon-enhanced thermionic energy converter (PETEC) has been proposed for intrinsic adaptive full spectrum solar energy conversion. The basic idea is to form the thermionic electron with desired energy by the photon-enhanced thermal tunneling process. Investigations on its fundamental performance indicate that the MIS-PETEC can have an overall output energy improvement of at least 0.8%, 2.5%, and 3% in typical sunny, rainy, and cloudy days compared to the normal PETEC. Additionally, the total output energy over a year can be improve...

中文翻译:

用于本征自适应全光谱太阳能转换的能量可调光子增强热隧穿电子

考虑到实际陆地太阳辐照​​度随大气动态变化,目前大多数太阳能电池的整体效率远低于报告的基于标准太阳光谱的静态值。太阳能电池在可变太阳辐照度下仍能保持高效率,是进一步提高太阳能转换效率的必要条件。在这项工作中,提出了一种基于金属-绝缘体-半导体 (MIS) 结构的光子增强热离子能量转换器 (PETEC),用于本征自适应全光谱太阳能转换。基本思想是通过光子增强热隧穿过程形成具有所需能量的热电子。对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量至少可以提高3%。这些结果为内在自适应全光谱太阳能转换提供了一种替代技术,有助于下一代高性能太阳能电池的开发。考虑到实际陆地太阳辐照​​度随大气动态变化,目前大多数太阳能的整体效率远低于报告的基于标准太阳光谱的静态值。太阳能电池的实现,可以在可变太阳辐照度下保持高效率,是进一步提高太阳能转换的必要条件。在这项工作中,提出了一种基于金属-绝缘体-半导体 (MIS) 结构的光子增强热离子能量转换器 (PETEC),用于本征自适应全光谱太阳能转换。基本思想是通过光子增强热隧穿过程形成具有所需能量的热电子。对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量可以提高... 已经提出了一种基于金属-绝缘体-半导体(MIS)结构的光子增强热离子能量转换器(PETEC)用于本征自适应全光谱太阳能转换。基本思想是通过光子增强热隧穿过程形成具有所需能量的热电子。对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量可以提高... 已经提出了一种基于金属-绝缘体-半导体(MIS)结构的光子增强热离子能量转换器(PETEC)用于本征自适应全光谱太阳能转换。基本思想是通过光子增强热隧穿过程形成具有所需能量的热电子。对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量可以提高... 对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量可以提高... 对其基本性能的调查表明,与正常的 PETEC 相比,MIS-PETEC 在典型的晴天、雨天和阴天的总输出能量提高至少 0.8%、2.5% 和 3%。此外,一年的总输出能量可以提高...
更新日期:2020-02-10
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