Light management through guided-mode resonances in thin-film silicon solar cells
Light management through guided-mode resonances in thin-film silicon solar cells
复制标题
通过薄膜硅太阳能电池中的导模谐振进行光管理
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
R. Magnusson
中科院分区：
文献类型：
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作者：
T. Khaleque;R. Magnusson
抽象的。我们从理论上解释和实验证明光捕获薄膜太阳能电池通过导模共振（GMR）效应。共振场增强和传播路径延长导致增强的太阳能吸收。我们制作纳米图案化的太阳能电池包含嵌入式300纳米周期，一维光栅。光栅图案是使用激光干涉光刻技术在玻璃衬底上制造的，然后用透明导电氧化物涂层作为顶部接触。在图案化的衬底上沉积厚度为320 nm的p-i-n氢化非晶硅太阳能电池，然后进行底部接触沉积。我们测量了谐振太阳能电池的光学和电学特性。与平面参考太阳能电池相比，在450至750 nm波长范围内观察到约35%的集成吸收增强。这种光管理方法导致14.8 mA/cm2的增强的短路电流密度，这比平面太阳能电池提高了约40%。我们的实验证明了简单和精心设计的GMR功能在薄膜太阳能电池的潜力。
Abstract. We theoretically explain and experimentally demonstrate light trapping in thin-film solar cells through guided-mode resonance (GMR) effects. Resonant field enhancement and propagation path elongation lead to enhanced solar absorption. We fabricate nanopatterned solar cells containing embedded 300-nm period, one-dimensional gratings. The grating pattern is fabricated on a glass substrate using laser interference lithography followed by a transparent conducting oxide coating as a top contact. A ∼320-nm thick p-i-n hydrogenated amorphous silicon solar cell is deposited over the patterned substrate followed by bottom contact deposition. We measure optical and electrical properties of the resonant solar cells. Compared to a planar reference solar cell, around 35% integrated absorption enhancement is observed over the 450 to 750-nm wavelength range. This light-management method results in enhanced short-circuit current density of 14.8 mA/cm2, which is a ∼40% improvement over planar solar cells. Our experimental demonstration proves the potential of simple and well-designed GMR features in thin-film solar cells.