کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5012318 | 1462810 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Broadband photon management of subwavelength structures surface for full-spectrum utilization of solar energy
ترجمه فارسی عنوان
مدیریت فوتون های پهن باند ساختارهای زیر طول موج برای استفاده از انرژی خورشیدی تمام طیف
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کلمات کلیدی
ساختارهای طول موج طول کامپوزیت، طیف کامل، مدیریت فوتون، سیستم های هیبریدی فتوولتائیک و ترموالکتریک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
In this work, advanced photon-management composite subwavelength structures are fabricated to manage solar energy in the full-spectrum (300-2500Â nm) wavelength range for the application of the photovoltaic-thermoelectric hybrid systems to fully utilize the solar energy. This proposed photon-management method will simultaneously realize efficient light trapping for the photons with above-bandgap energy in solar cells and the utilization of the below-bandgap photons and the waste heat resulting from the thermalization effect in solar cells with bottom thermoelectric devices. The typical structure is designed: Top ordered hexagonal nanohole arrays can trap above-bandgap photons to enhance the absorption in the silicon wafer, and TiO2/SiO2 bilayer films are deposited on the bottom side of the wafer to improve the transmission of the below-bandgap photons. â¼97% total absorptance for wavelengths of 300-1100Â nm is achieved with optimized diameters of central nanoholes. The total transmittance, on the other hand, is improved to â¼60% from 1200Â nm to 2500Â nm. The results indicate that the structures realize the appropriate allocation of photons within different wavelength ranges to different devices for sufficient utilization of full-spectrum solar energy. This novel full-spectrum photon management benefits from the strong scattering effect among the nanoholes and the gradient refractive index of bilayer films. Moreover, the photon-management performance shows angle-independent and polarization-insensitive characteristics. This method can be applied to various kinds of solar cells for photovoltaic-thermoelectric hybrid systems and may provide thoughts for other solar harvesting applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 152, 15 November 2017, Pages 22-30
Journal: Energy Conversion and Management - Volume 152, 15 November 2017, Pages 22-30
نویسندگان
Yuanpei Xu, Yimin Xuan, Xianglei Liu,