Solution processing route to Na incorporation in CZTSSe nanoparticle ink solar cells on foil substrate
Solution processing route to Na incorporation in CZTSSe nanoparticle ink solar cells on foil substrate
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DOI：
10.1007/s10854-019-01108-3
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发表时间：
2019-03
期刊：
影响因子：
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通讯作者：
Xinya Xu;Y. Qu;S. Campbell;Mathieu Garrec;Bethan Ford;V. Barrioz;G. Zoppi;N. Beattie
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文献类型：
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作者：
Xinya Xu;Y. Qu;S. Campbell;Mathieu Garrec;Bethan Ford;V. Barrioz;G. Zoppi;N. Beattie
钠是薄膜光伏电池中的关键掺杂剂，具有报道的益处，包括促进晶粒生长、钝化晶界以及增加基于黄铜矿和锌黄锡矿的太阳能电池中的载流子浓度。以衬底配置制造的研究级器件通常依赖于在高温处理期间Na从钠钙玻璃衬底扩散到光伏吸收层中。然而，对于柔性基底（例如箔和塑料）上的样品，这是不可用的，并且需要替代方法。在这项工作中，我们从纳米粒子墨水柔性钼基板上制造地球丰富的薄膜太阳能电池，并展示了一个简单的，低成本的路线，将钠在溶液中，从而使其与大面积，大批量制造兼容。经验证，该技术相对于建立在钼箔上的参考柔性器件提高了器件效率。
Sodium is a key dopant in thin film photovoltaic cells with reported benefits including promotion of grain growth, passivation of grain boundaries and increased carrier concentration in chalcopyrite and kesterite based solar cells. Research-grade devices fabricated in substrate configuration often rely on diffusion of Na from a soda lime glass substrate into the photovoltaic absorber layer during high temperature processing. However, for samples on flexible substrates such as foils and plastics, this is not available and requires alternative approaches. In this work, we fabricate Earth-abundantthin film solar cells from nanoparticle inks on flexible molybdenum substrates and demonstrate a simple, low-cost route to incorporating Na in solution thereby making it compatible with large area, high volume manufacturing. The technique is verified to improve the device efficiency relative to a reference flexible device built on molybdenum foil.