تقرير
High performance solar cells based on graphene-GaAs heterostructures
| العنوان: | High performance solar cells based on graphene-GaAs heterostructures |
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| المؤلفون: | Li, Xiaoqiang, Zhang, Shengjiao, Wang, Peng, Zhong, Huikai, Wu, Zhiqian, Chen, Hongshen, Liu, Cheng, Lin, Shisheng |
| المصدر: | Nano Energy, 16, 310 (2015) |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | The honeycomb connection of carbon atoms by covalent bonds in a macroscopic two-dimensional scale leads to fascinating graphene and solar cell based on graphene/silicon Schottky diode has been widely studied. For solar cell applications, GaAs is superior to silicon as it has a direct band gap of 1.42 eV and its electron mobility is six times of that of silicon. However, graphene/GaAs solar cell has been rarely explored. Herein, we report graphene/GaAs solar cells with conversion efficiency (Eta) of 10.4% and 15.5% without and with anti-reflection layer on graphene, respectively. The Eta of 15.5% is higher than the state of art efficiency for graphene/Si system (14.5%). Furthermore, our calculation points out Eta of 25.8% can be reached by reasonably optimizing the open circuit voltage, junction ideality factor, resistance of graphene and metal/graphene contact. This research strongly support graphene/GaAs hetero-structure solar cell have great potential for practical applications. Comment: The conversion efficiency mentioned in this manuscript is caculated accurately based on the J-V curve and effective functional area |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nanoen.2015.07.003 |
| الوصول الحر: | http://arxiv.org/abs/1409.3500Test |
| رقم الانضمام: | edsarx.1409.3500 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nanoen.2015.07.003 |
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