Multifunctional Additive CdAc2 for Efficient Perovskite-Based Solar Cells,Advanced Materials

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Multifunctional Additive CdAc2 for Efficient Perovskite-Based Solar Cells
Advanced Materials ( IF 27.4 ) Pub Date : 2023-05-25 , DOI: 10.1002/adma.202211806
Ningyu Ren _{1,

2,

3,

4,

5,

6,

7} , Pengyang Wang _{1,

2,

3,

4,

5} , Junke Jiang _{8,

9} , Renjie Li _{1,

2,

3,

4,

5} , Wei Han _{1,

2,

3,

4,

5} , Jingjing Liu _{1,

2,

3,

4,

5} , Zhao Zhu _{1,

2,

3,

4,

5} , Bingbing Chen _{1,

2,

3,

4,

5} , Qiaojing Xu _{1,

2,

3,

4,

5} , Tiantian Li _{6,

7} , Biao Shi _{1,

2,

3,

4,

5} , Qian Huang _{1,

2,

3,

4,

5} , Dekun Zhang _{1,

2,

3,

4,

5} , Sofia Apergi _{8,

9} , Geert Brocks _{8,

9,

10} , Chenjun Zhu _{6,

7} , Shuxia Tao _{8,

9} , Ying Zhao _{1,

2,

3,

4,

5} , Xiaodan Zhang _{1,

2,

3,

4,

5}

Affiliation

Institute of Photoelectronic Thin Film Devices and Technology, Renewable Energy Conversion and Storage Center, Solar Energy Research Center, Nankai University, Tianjin, 300350, P. R. China.
Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Tianjin, 300350, P. R. China.
Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, P. R. China.
Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education, Tianjin, 300350, P. R. China.
Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China.
School of Physical Science and Technology, Inner Mongolia University, Key Laboratory of Semiconductor, Hohhot, 010021, P. R. China.
Photovoltaic Technology at Universities of Inner Mongolia Autonomous Region, Hohhot, 010021, P. R. China.
Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands.
Center for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands.
Computational Chemical Physics, Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, Enschede, 7500AE, The Netherlands.

Polycrystalline perovskite films fabricated on flexible and textured substrates often are highly defective, leading to poor performance of perovskite devices. Finding substrate-tolerant perovskite fabrication strategies is therefore paramount. Herein, this study shows that adding a small amount of Cadmium Acetate (CdAc₂) in the PbI₂ precursor solution results in nano-hole array films and improves the diffusion of organic salts in PbI₂ and promotes favorable crystal orientation and suppresses non-radiative recombination. Polycrystalline perovskite films on the flexible substrate with ultra-long carrier lifetimes exceeding 6 µs are achieved. Eventually, a power conversion efficiency (PCE) of 22.78% is obtained for single-junction flexible perovskite solar cells (FPSCs). Furthermore, it is found that the strategy is also applicable for textured tandem solar cells. A champion PCE of 29.25% (0.5003 cm²) is demonstrated for perovskite/silicon tandem solar cells (TSCs) with CdAc₂. Moreover, the un-encapsulated TSCs maintains 109.78% of its initial efficiency after 300 h operational at 45 °C in a nitrogen atmosphere. This study provides a facile strategy for achieving high-efficiency perovskite-based solar cells.

中文翻译：

用于高效钙钛矿太阳能电池的多功能添加剂 CdAc2

在柔性和有纹理的基底上制造的多晶钙钛矿薄膜通常有很高的缺陷，导致钙钛矿器件的性能较差。因此，寻找耐基板的钙钛矿制造策略至关重要。在此，本研究表明，在PbI ₂前驱体溶液中添加少量醋酸镉(CdAc ₂ )会产生纳米孔阵列薄膜，并改善有机盐在PbI ₂中的扩散，促进有利的晶体取向并抑制非辐射重组。在柔性基板上实现了超长载流子寿命超过 6 µs 的多晶钙钛矿薄膜。最终，单结柔性钙钛矿太阳能电池（FPSC）的功率转换效率（PCE）达到22.78％。此外，发现该策略也适用于纹理化串联太阳能电池。_{使用 CdAc 2}的钙钛矿/硅串联太阳能电池 (TSC)的冠军 PCE 为 29.25% (0.5003 cm ² ) 。此外，未封装的 TSC 在 45°C 氮气气氛下运行 300 小时后仍保持其初始效率的 109.78%。这项研究为实现高效钙钛矿太阳能电池提供了一种简便的策略。

更新日期：2023-05-25

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