有机体添加剂的调谐同分异构效应使钙钛矿太阳能电池高效稳定

IF 26.6 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2025-01-10 DOI:10.1007/s40820-024-01613-z

Qi Zhang, Qiangqiang Zhao, Han Wang, Yiguo Yao, Lei Li, Yulin Wei, Ruida Xu, Chenyang Zhang, Erik O. Shalenov, Yongguang Tu, Kai Wang, Mingjia Xiao

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引用次数: 0

摘要

通过用CzBP官能团（P = O··Pb， N-H··I和P = O··N-H）锚定钙钛矿位点，抑制了大量非辐射重组，抑制了离子迁移。在钙钛矿薄膜中掺杂CzBP，增强了晶体间的相互作用，提高了光致发光量子产率。采用典型的富电子部分作为π-连接剂取代经典的烷基间隔剂，促进了CzBP的载流子输运过程，而咔唑的钝化作用进一步导致了高VOC。优化后的2,7- czbp处理器件的功率转换效率（PCE）最高，为25.88%，0.090 cm2时VOC为1.189 V， 14 cm2时钙钛矿太阳能电池组件的PCE为21.04%。对于2,7- czbp，共轭越广，分子几何越线性，性能越有效。

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Tuning Isomerism Effect in Organic Bulk Additives Enables Efficient and Stable Perovskite Solar Cells

Highlights

By anchoring the perovskite sites with the functional groups of CzBP (P = O···Pb, N–H···I and P = O···N–H), the bulk nonradiative recombination is suppressed and ion migration is inhibited. Doping perovskite films with CzBP led to enhanced intercrystallite interactions in the bulk and improved photoluminescence quantum yield.
Using a typical electron-rich moiety as the π-linker to replace the classic alkyl spacer in CzBP facilitated the charge-carrier transport processes and the passivation effect of carbazole further contributed to high V_OC. The optimized 2,7-CzBP-treated device achieves the highest power conversion efficiency (PCE) of 25.88%, with V_OC of 1.189 V for 0.090 cm² and the perovskite solar cell module with a PCE of 21.04% for 14 cm².
For 2,7-CzBP, the more extended conjugation and the more linear molecular geometry result in a more effective improvement in the performance.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.