2023年2月28日 · To elucidate the role of buried Py on the crystallinity and morphology of PVK films, SEM and XRD characterization were conducted. Fig. 3 a shows the cross-sectional SEM image of the PSC, and the result show that PVK has an ideal thickness (∼480 nm) that contributes to the full utilization of light.

2024年10月23日 · 扫描电子显微镜 (SEM)结果显示 (图1 c)，PVK薄膜完全覆盖CIGS表面，形态紧凑致密，降低了表面粗糙度。 此外，D-HLH引入PVK前驱体后可以钝化体缺陷。 同时，结合表/界面双重钝化来解决PVK/C60界面上复杂的载流子复合问题。 这些努力对器件结构为ITO/SAM/PVK/C60/BCP/Ag (图1d)的单结钙钛矿太阳能电池 (PSCs)的性能产生了影响。 与对照器件相比，添加剂工程使得器件性能从平均PCE约17.9%提高到约19.1% (图1 e)。 与单一表面 …

2024年9月22日 · In this paper, D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK crystals. In addition, the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.

2024年12月27日 · Here, we offer an effective interfacial passivation method via a poly (N-vinylcarbazole) (PVK) layer to protect perovskite films and prevent their moisture degradation under ambient air conditions. The power conversion efficiency of the PVK-based champion PSC is 23.27% and is higher than that of the control PSC (20.94%).

2025年2月3日 · Here we demonstrate ethane and ethylene synthesis by interfacing lead halide perovskite photoabsorbers with suitable copper nanoflower electrocatalysts. The resulting perovskite photocathodes...

2017年2月1日 · SEM images of double and triple layers are shown in Fig. 7 with structure of PVK/CA/Glass and PVK/CA/PVK, respectively. As it is shown, double layer growth is light gray spherical grains in dark background which their distribution and sizes are integrated, their shapes are regular and they are scattered sporadically.

2023年5月20日 · Using interface modification is an effective method to improve the crystallinity and stability of perovskite solar cells (PSCs). P-type poly (9-vinylcarbazole) (PVK) inserted the interface of perovskite and electron transport layer (ETL), which can improve the crystallinity and stability of PSCs.

2025年2月19日 · 本研究通过设计开发两种咔唑基双膦酸酯添加剂，揭示了分子异构对材料钝化能力、传输性能及器件性能的影响，为新型高效有机多功能添加剂的设计提供了新思路。 Tuning Isomerism Effect in Organic Bulk Additives Enables Efficient and Stable Perovskite Solar Cells. 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*

2023年4月27日 · Top-view scanning electron microscopy (SEM) images show that the microstructure of the perovskite deposited on different HTLs appears to be very similar (fig. S12). To understand the huge difference of PL, we carefully characterized the morphology and crystallinity of the perovskite near the bottom interface.

2020年11月9日 · Compared with conventional planar TiO 2 layer, appropriate pore size dramatically improves infiltration of perovskite (PVK) into the mesoporous layer because of the larger voids formed within the TiO 2 mesoporous layer and further enhances the light absorption efficiency of PVK for the better light-scattering ability of 20 nm TiO 2 nanoparticles.