基于光学黑洞的单纳米线太阳电池研究
发布时间：2019-03-26 20:24
【摘要】：为实现对太阳光的宽波段高效吸收,引入光学黑洞(optical black hole,OBH)概念,用有限元方法对单纳米线太阳电池(SNSCs)进行电磁仿真和结构设计。剖析了极化模式、OBH尺寸、核壳匹配、折射率阶梯分层等因素对OBH SNSCs的陷光和光学吸收性能的影响。研究表明:较以往介电常数匹配方式,利用折射率匹配设计可进一步提高OBH系统的光学吸收性能;借助微纳结构对光波的调控,可实现全向宽带高效吸收,从而将OBH应用于微纳光伏系统;进一步发现,可通过优化内核半径和外壳折射率分布来提高基于OBH的非晶硅(a-Si:H)SNSCs吸收效率,获得的光电流较传统无包层a-Si:H SNSCs提升约300%。
[Abstract]:The concept of optical black hole (optical black hole,OBH (optical black hole) is introduced to realize the high efficiency absorption of solar light in wide band. The electromagnetic simulation and structure design of single nanowire solar cell (SNSCs) are carried out by finite element method. The effects of polarization mode, OBH size, core-shell matching and refractive index ladder delamination on the optical and optical absorption properties of OBH SNSCs are analyzed. The results show that the optical absorption performance of OBH system can be further improved by using refractive index matching design compared with the previous dielectric constant matching methods. With the help of the micro / nano structure to control the optical wave, the omni-directional broadband and efficient absorption can be realized, so that the OBH is applied to the micro / nano photovoltaic system. Furthermore, it is found that the absorption efficiency of amorphous silicon (a-Si:H) SNSCs based on OBH can be improved by optimizing the core radius and the refractive index distribution of the shell, and the photocurrent can be increased by about 300% compared with the conventional a-Si:H SNSCs without cladding.
【作者单位】： 苏州大学物理与光电.能源学部;苏州纳米科技协同创新中心;江苏省先进光学制造技术重点实验室;教育部现代光学技术重点实验室;
【基金】：高等学校博士学科点专项科研基金资助项目(20133201110021) 国家自然科学基金重大研究计划培育项目(91233119) 中国博士后特别资助基金(2015T80578)
【分类号】：TM914.4
本文编号：2447894
[Abstract]:The concept of optical black hole (optical black hole,OBH (optical black hole) is introduced to realize the high efficiency absorption of solar light in wide band. The electromagnetic simulation and structure design of single nanowire solar cell (SNSCs) are carried out by finite element method. The effects of polarization mode, OBH size, core-shell matching and refractive index ladder delamination on the optical and optical absorption properties of OBH SNSCs are analyzed. The results show that the optical absorption performance of OBH system can be further improved by using refractive index matching design compared with the previous dielectric constant matching methods. With the help of the micro / nano structure to control the optical wave, the omni-directional broadband and efficient absorption can be realized, so that the OBH is applied to the micro / nano photovoltaic system. Furthermore, it is found that the absorption efficiency of amorphous silicon (a-Si:H) SNSCs based on OBH can be improved by optimizing the core radius and the refractive index distribution of the shell, and the photocurrent can be increased by about 300% compared with the conventional a-Si:H SNSCs without cladding.
【作者单位】： 苏州大学物理与光电.能源学部;苏州纳米科技协同创新中心;江苏省先进光学制造技术重点实验室;教育部现代光学技术重点实验室;
【基金】：高等学校博士学科点专项科研基金资助项目(20133201110021) 国家自然科学基金重大研究计划培育项目(91233119) 中国博士后特别资助基金(2015T80578)
【分类号】：TM914.4
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1 孙楠;方酸菁类光学吸收材料的制备及性能研究[D];东华大学;2012年
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