This study aims to enhance the optical and thermal properties of cesium-based perovskite nanocrystals (NCs) through surface passivation with organic sulfonate (or sulfonic acid) ligands. Four different phenylated ligands, including sodium β-styrenesulfonate (SbSS), sodium benzenesulfonate (SBS), sodium -toluenesulfonate (SPTS), and 4-dodecylbenzenesulfonic acid (DBSA), were employed to modify blue-emitting CsPbBrCl perovskite NCs, resulting in improved size uniformity and surface functionalization. Transmission electron microscopy and X-ray photoelectron spectroscopy confirmed the successful anchoring of sulfonate or sulfonic acid ligands on the surface of perovskite NCs. Moreover, the photoluminescence quantum yield increased from 32% of the original perovskite NCs to 63% of the SPTS-modified ones due to effective surface passivation. Time-resolved photoluminescence decay measurements revealed extended PL lifetimes for ligand-modified NCs, indicative of reduced nonradiative recombination. Thermal stability studies demonstrated that the SPTS-modified NCs retained nearly 80% of the initial PL intensity when heated at 60 °C for 10 min, surpassing the performance of the original NCs. These findings emphasize the optical and thermal stability enhancement of cesium-based perovskite NCs through surface passivation with suitable sulfonate ligands.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11206382 | PMC |
| http://dx.doi.org/10.3390/nano14121049 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hydrogel Electrolyte-Mediated In Situ Zn-Anode Modification and the Ru-RuO/NGr-Coated Cathode for High-Performance Solid-State Rechargeable Zn-Air Batteries.
ACS Appl Mater Interfaces
January 2025
Physical & Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune, Maharashtra 411008, India.
This work aims to deal with the challenges associated with designing complementary bifunctional electrocatalysts and a separator/membrane that enables rechargeable zinc-air batteries (RZABs) with nearly solid-state operability. This solid-state RZAB was accomplished by integrating a bifunctional electrocatalyst based on Ru-RuO interface nanoparticles supported on nitrogen-doped (N-doped) graphene (Ru-RuO/NGr) and a dual-doped poly(acrylic acid) hydrogel (d-PAA) electrolyte soaked in KOH with sodium stannate additive. The catalyst shows enhanced activity and stability toward the two oxygen reactions, i.
View Article and Find Full Text PDFToward Fast-Charging and Dendritic-Free Li Growth on Natural Graphite Through Intercalation/Conversion on MoS Nanosheets.
Adv Mater
January 2025
Institute for Superconducting & Electronic Materials (ISEM), Faculty of Engineering and Information Sciences, University of Wollongong, Innovation Campus, Squires Way, North Wollongong, NSW, 2500, Australia.
Article Synopsis
- During fast-charging, uneven lithium plating on graphite anodes leads to performance issues and safety risks for lithium-ion batteries due to the formation of a passivation layer known as the solid-electrolyte interphase (SEI).
- A molybdenum disulfide (MoS) coating on natural graphite modifies the SEI properties, resulting in faster charging times and improved long-term cycling performance by enhancing lithium transport and reducing interfacial resistance.
- The MoS-NG anode demonstrates superior fast-charging capabilities, achieving a charging time of 14.7 minutes at 80% state of charge, making it a viable option for electric vehicle applications over 300 cycles without sacrificing energy density.
Thermal Annealing-Induced Phase Conversion in N-type Triple-Cation Lead-Based Perovskite Field Effect Transistors.
ACS Appl Mater Interfaces
January 2025
Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea.
The field of perovskite optoelectronics and electronics has rapidly advanced, driven by excellent material properties and a diverse range of fabrication methods available. Among them, triple-cation perovskites such as CsFAMAPbI offer enhanced stability and superior performance, making them ideal candidates for advanced applications. However, the multicomponent nature of these perovskites introduces complexity, particularly in how their structural, optical, and electrical properties are influenced by thermal annealing─a critical step for achieving high-quality thin films.
View Article and Find Full Text PDFControlled Synthesis of Perovskite Nanocrystals at Room Temperature by Liquid Crystalline Templates.
ACS Nano
January 2025
Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
Perovskite nanocrystals (PNCs) are promising active materials because of their outstanding optoelectronic properties, which are finely tunable via size and shape. However, previous synthetic methods such as hot-injection and ligand-assisted reprecipitation require a high synthesis temperature or provide limited access to homogeneous PNCs, leading to the present lack of commercial value and real-world applications of PNCs. Here, we report a room-temperature approach to synthesize PNCs within a liquid crystalline antisolvent, enabling access to PNCs with a precisely defined size and shape and with reduced surface defects.
View Article and Find Full Text PDFSelf-assembled hole-selective contact for efficient Sn-Pb perovskite solar cells and all-perovskite tandems.
Nat Commun
January 2025
College of Materials Science and Engineering & Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu, China.
Self-assembled monolayers (SAMs) have displayed unpredictable potential in efficient perovskite solar cells (PSCs). Yet most of SAMs are largely suitable for pure Pb-based devices, precisely developing promising hole-selective contacts (HSCs) for Sn-based PSCs and exploring the underlying general mechanism are fundamentally desired. Here, based on the prototypical donor-acceptor SAM MPA-BT-BA (BT), oligoether side chains with different length (i.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!