A non-toxic, solution-processed, earth abundant absorbing layer for thin-film solar cells
A non-toxic, solution-processed, earth abundant absorbing layer for thin-film solar cells
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DOI：
10.1039/c1ee02314d
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发表时间：
2012
影响因子：
32.5
通讯作者：
Kyoohee Woo;Youngwoo Kim;Jooho Moon
中科院分区：
文献类型：
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作者：
Kyoohee Woo;Youngwoo Kim;Jooho Moon
铜锌锡硫化物（Cu2ZnSnS4，CZTS）作为用于大规模生产薄膜太阳能电池的下一代吸收材料，由于所有成分的天然丰度高、直接带隙能量范围为1.0至1.5 eV可调以及吸收系数大，在过去几年中引起了广泛关注。此外，为了解决昂贵的真空工艺问题，正在开发基于非真空溶液的 CZTS 吸收层沉积方法。在这里，我们展示了使用空气稳定的无毒溶剂型墨水制造厚度为 2.8–3.0 μm 和微米级颗粒 (1–2.5 μm) 的高质量 CZTS 吸收层。我们在此报道的 CZTS 吸收器制造方法将是实现低成本、大面积高效率太阳能电池的第一步。
Copper zinc tin sulfide (Cu2ZnSnS4, CZTS) has attracted significant attention in the past few years as a next generation absorber material for the production of thin film solar cells on large scales due to the high natural abundance of all constituents, tunable direct band gap energy ranging from 1.0 to 1.5 eV, and large absorption coefficient. In addition, to address the issue of expensive vacuum-based processes, non-vacuum solution-based approaches are being developed for CZTS absorber layer deposition. Here, we demonstrate the fabrication of a high quality CZTS absorber layer with a thickness of 2.8–3.0 μm and micrometre-scaled grains (1–2.5 μm) using air-stable non-toxic solvent-based inks. Our approach for the fabrication of CZTS absorber, reported here, will be the first step in achieving low-cost and large area solar cells with high efficiency.