Related Experiment Video
Updated: Feb 5, 2026
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
Ag@SiO₂ Core-shell Nanoparticles Embedded in a TiO₂ Mesoporous Layer Substantially Improve the Performance of
Bao Wang1, Xiangyu Zhu2, Shuhan Li3
1School of Science, Wuhan University of Technology, Wuhan 430070, China. 1174828021@whut.edu.cn.
Abstract:
In this study, Ag@SiO₂ nanoparticles were synthesized by a modified Stöber method for preparing the TiO₂ mesoporous layer of carbon counter electrode-based perovskite solar cells (PSCs) without a hole transporting layer. Compared with normal PSCs (without Ag@SiO₂ incorporated in the TiO₂ mesoporous layer), PSCs with an optimal content of Ag@SiO₂ (0.3 wt. % Ag@SiO₂-TiO₂) show a 19.46% increase in their power conversion efficiency, from 12.23% to 14.61%, which is mainly attributed to the 13.89% enhancement of the short-circuit current density, from 20.23 mA/cm² to 23.04 mA/cm². These enhancements mainly contributed to the localized surface Plasmon resonance effect and the strong scattering effect of Ag@SiO₂ nanoparticles. However, increasing the Ag@SiO₂ concentration in the mesoporous layer past the optimum level cannot further increase the short-circuit current density and incident photon-to-electron conversion efficiency of the devices, which is primarily ascribed to the electron transport pathways being impeded by the insulating silica shells inside the TiO₂ network.
Related Concept Videos
02:10The Nucleosome Core Particle
The paradox
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their main responsibility is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. While on the other hand, they must allow polymerase enzymes to access DNA...
01:12The Nucleosome Core Particle
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their primary aim is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. On the other hand, they must allow polymerase enzymes to access histone-bound DNA during...
01:18Outer Layers of the Cell Envelope
01:21Layers of the Epidermis
Stratum Basale
Stratum basale, also known as the stratum germinativum, is the deepest layer of the epidermis. It is composed of a single layer of actively dividing cells called basal cells or basal keratinocytes. These cells constantly undergo cell division to replenish the upper layers of the epidermis. Additionally, melanocytes, which...
01:30Thematic Layering in GIS
01:15Layers of the Heart Wall
The myocardium, the thickest layer, consists of cardiac muscle cells interconnected by intercalated discs and crisscrossing connective tissue fibers. These muscle fibers contract...