Facile synthesis of nitrogen-doped graphene frameworks for enhanced performance of hole transport material-free perovskite solar cells†,Journal of Materials Chemistry C

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Facile synthesis of nitrogen-doped graphene frameworks for enhanced performance of hole transport material-free perovskite solar cells†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-02-27 00:00:00 , DOI: 10.1039/c8tc00086g
Yanyan Zhu _{1,

2,

3,

4,

5} , Suping Jia _{4,

5,

6,

7,

8} , Jianfeng Zheng _{4,

5,

6,

7,

8} , Yulong Lin _{1,

2,

3,

4} , Yarong Wu _{1,

2,

3,

4} , Jing Wang _{1,

2,

3,

4}

Affiliation

Nitrogen-doped graphene frameworks (N-GFs) with a large specific surface area (1149 m² g⁻¹) are successfully synthesized from fumaric acid in the presence of sodium carbonate with urea added as nitrogen precursor through a facile one-step fast pyrolysis. The N-GFs can be utilized as an excellent counter electrode in hole transport material (HTM)-free perovskite solar cells (PSCs), achieving the power conversion efficiency of 10.32%, higher than the PSCs using undoped graphene frameworks. The enhanced performance of N-GF-based PSCs is probably due to the superiority of N-GFs in enabling increased charge extraction efficiency and transportation to substantially reduce charge recombination losses. This work indicates the great potential of N-GFs to replace expensive organic HTM and noble-metal electrodes in developing low-cost and efficient HTM-free PSCs.

中文翻译：

氮掺杂石墨烯骨架的轻松合成，可增强无空穴传输材料的钙钛矿太阳能电池的性能†

具有大比表面积（1149 m ² g ^-1）的氮掺杂石墨烯骨架（N-GFs））是通过碳酸钠存在下富马酸成功合成的，其中尿素作为氮前体通过简便的一步式快速热解法添加。N-GFs可以用作不含空穴传输材料（HTM）的钙钛矿太阳能电池（PSC）中的极好的反电极，实现了10.32％的功率转换效率，高于使用未掺杂石墨烯骨架的PSC。基于N-GF的PSC的性能增强可能是由于N-GF在提高电荷提取效率和运输以显着减少电荷重组损失方面的优越性。这项工作表明，N-GF在开发低成本和高效的无HTM的PSC方面具有巨大的潜力来替代昂贵的有机HTM和贵金属电极。

更新日期：2018-02-27

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