Low-temperature and facile solution-processed two-dimensional TiS2 as an effective electron transport layer for UV-stable planar perovskite solar cells†,Journal of Materials Chemistry A

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Low-temperature and facile solution-processed two-dimensional TiS2 as an effective electron transport layer for UV-stable planar perovskite solar cells†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2018-04-13 00:00:00 , DOI: 10.1039/c8ta01143e
Guannan Yin _{1,

2,

3,

4,

5} , Huan Zhao _{1,

2,

3,

4,

5} , Jiangshan Feng _{1,

2,

3,

4,

5} , Jie Sun _{1,

2,

3,

4,

5} , Junqing Yan _{1,

2,

3,

4,

5} , Zhike Liu _{1,

2,

3,

4,

5} , Shenghuang Lin _{6,

7,

8} , Shengzhong (Frank) Liu _{1,

2,

3,

4,

5}

Affiliation

Charge transport layers (CTLs) play a great role in achieving highly efficient and stable perovskite solar cells (PSCs). Recently, two-dimensional (2D) materials with high mobility have been proved to be good candidates for CTLs in PSCs. Here, 2D-TiS₂ nanosheets are prepared by a simple solution exfoliation method. It is demonstrated that 2D-TiS₂ can be applied as an effective electron transport layer in planar PSCs for the first time. Using TiS₂ films prepared from solution with an optimized concentration, PSCs show a high power conversion efficiency (PCE) of 17.37%. Benefiting from the merits of solution processability, low temperature, high mobility and suitable energy level, the proposed TiS₂ fabrication method could aid the scalable production of PSCs with high efficiency and excellent UV stability. Moreover, such a facile and low-temperature film retreatment approach guarantees the application of TiS₂ as an ETL in flexible devices.

中文翻译：

低温且易于固溶处理的二维TiS ₂作为紫外线稳定的平面钙钛矿太阳能电池的有效电子传输层†

电荷传输层（CTL）在实现高效，稳定的钙钛矿太阳能电池（PSC）中起着重要作用。最近，高迁移率的二维（2D）材料已被证明是PSC中CTL的良好候选材料。在此，通过简单的溶液剥离法制备2D-TiS ₂纳米片。证明了2D-TiS ₂可以首次用作平面PSC中的有效电子传输层。使用由浓度优化的溶液制备的TiS ₂薄膜，PSC的功率转换效率（PCE）达到17.37％。拟议的TiS ₂受益于溶液可加工性，低温，高迁移率和合适的能级等优点该制造方法可以帮助以高效率和优异的紫外线稳定性大规模生产PSC。而且，这种简便且低温的膜再处理方法保证了TiS ₂作为ETL在柔性器件中的应用。

更新日期：2018-04-13

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