Ge Zhaoyun, Xu Ling, Cao Yunqing, Wu Tao, Song Hucheng, Ma Zhongyuan, Xu Jun, Chen Kunji
School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures of National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, People's Republic of China.
Nanoscale Res Lett. 2015 Dec;10(1):998. doi: 10.1186/s11671-015-0998-9. Epub 2015 Aug 19.
We report herein on the effects of silicon nanowire with different morphology on the device performance of n-SiNW/PEDOT:PSS hybrid solar cells. The power conversion efficiency (PCE) and external quantum efficiency (EQE) of the SiNW/PEDOT:PSS hybrid solar cells can be optimized by varying the length of the silicon nanowires. The optimal length of silicon nanowires is 0.23 μm, and the hybrid solar cell with the optimal length has the V oc of 569 mV, J sc of 30.1 mA/cm(2), and PCE of 9.3 %. We fabricated more isolated silicon nanowires with the diluted etching solution. And the J sc of the hybrid solar cell with more isolated nanowires has a significant enhancement, from 30.1 to 33.2 mA/cm(2). The remarkable EQE in the wavelength region of 300 and 600 nm was also obtained, which are in excess of 80 %. Our work provides a simple method to substantially improve the EQE of hybrid solar cell in the short wavelength region.
我们在此报告不同形态的硅纳米线对n-SiNW/PEDOT:PSS混合太阳能电池器件性能的影响。通过改变硅纳米线的长度，可以优化SiNW/PEDOT:PSS混合太阳能电池的功率转换效率（PCE）和外量子效率（EQE）。硅纳米线的最佳长度为0.23μm，具有最佳长度的混合太阳能电池的开路电压（V oc）为569mV，短路电流密度（J sc）为30.1mA/cm²，功率转换效率（PCE）为9.3%。我们用稀释蚀刻溶液制备了更多孤立的硅纳米线。具有更多孤立纳米线的混合太阳能电池的J sc有显著提高，从30.1mA/cm²提高到33.2mA/cm²。在300至600nm波长区域还获得了显著的EQE，超过80%。我们的工作提供了一种简单的方法来大幅提高混合太阳能电池在短波长区域的EQE。
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