6.6% efficient antimony selenide solar cells using grain structure control and an organic contact layer
6.6% efficient antimony selenide solar cells using grain structure control and an organic contact layer
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DOI：
10.1016/j.solmat.2018.09.004
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发表时间：
2018-12-15
影响因子：
6.9
通讯作者：
Major, Jonathan D.
中科院分区：
文献类型：
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作者：
Hutter, Oliver S.;Phillips, Laurie J.;Major, Jonathan D.
我们报道了一种高效率的硒化锑（Sb2Se3）光伏器件结构，该器件采用了一种新的多步骤近空间升华沉积工艺，其中包含了Sb2Se3种子层；通过近距离升华实现更高效率装置的关键。利用玻璃立条FTO立条TiO2立条Sb2Se3立条pcdbt立条Au结构，实现了6.6%的峰值效率，与目前该材料的器件记录相当。至关重要的是，该装置避免了空穴传输材料中的有毒铅和窗口层中的镉。此外，pcdbt背触点的加入既保持了峰值效率6.6%，又改善了性能的均匀性，使平均效率从4.3%提高到6.1%。
We report a high efficiency antimony selenide (Sb2Se3) photovoltaic device structure using a new multi-step close space sublimation deposition process incorporating a Sb2Se3 seed layer; key to achieving higher efficiency devices via close space sublimation. Utilizing a glass vertical bar FTO vertical bar TiO2 vertical bar Sb2Se3 vertical bar PCDTBT vertical bar Au structure, a peak efficiency of 6.6% was achieved, which is comparable to the current record devices for this material. Crucially, this device avoids toxic lead in the hole transport material, and cadmium in the window layer. Moreover, the addition of the PCDTBT back contact both maintains peak efficiency of 6.6%, and improves the uniformity of performance, increasing the average efficiency from 4.3% to 6.1%.