Recent Progress in Electrochemiluminescence of Halide Perovskites

Abstract

Halide perovskites are a rapidly developing class of solution-processable semiconductors which, to date, have a huge impact across several scientific communities. The remarkable photophysical attributes of halide perovskites illustrate their considerable potential in the electrochemiluminescence (ECL) realm. Over the past 4 years, great progress has been achieved in using halide perovskites as ECL emitters. In this mini-review, the basic characteristics, synthetic approaches, and ECL mechanisms for halide perovskite emitters are first introduced. To the best of our knowledge, most of the reported ECL-active halide perovskites and their disclosed unique features are detailly summarized. Stabilization and interface manipulation strategies for desirable ECL performance are further highlighted. The preliminary halide perovskites-related ECL applications are finally discussed, and prospects are also anticipated.

Recent progress of metal nanoclusters in electrochemiluminescence

“…6 Later, a variety of ECL-active semiconductor nanocrystals spring up like mushrooms, such as II-VI compounds (e.g., CdS, CdSe), 7 carbon dots, 8 and the recently emerging halide perovskites. 9 In recent years, surging interest has emerged towards metal nanoclusters (MeNCs) as promising ECL candidates that are superior to foregoing emitters in many aspects, such as molecule-like nanostructure, atomic precision, stable optical and electrochemical properties, and low biological toxicity. [10][11][12] In 2009, Díez et al first reported the colour tunability and ECL phenomenon of few-atom silver nanoclusters (AgNCs), 13 which sets off an upsurge in fundamental ECL research and application of MeNCs.…”

“…, CdS, CdSe), 7 carbon dots, 8 and the recently emerging halide perovskites. 9 In recent years, surging interest has emerged towards metal nanoclusters (MeNCs) as promising ECL candidates that are superior to foregoing emitters in many aspects, such as molecule-like nanostructure, atomic precision, stable optical and electrochemical properties, and low biological toxicity. 10–12…”

Development of a label-free electrochemiluminescence biosensor for the sensitive detection of porcine gelatin using carbon nanostructured materials

“…23 In recent years, the ECL technique has obtained remarkable attention in the development of biosensors due to its versatility and stability. 24,25 Moreover, the incorporation of different carbon-based nanomaterials has also aided the trend of using ECL methods in developing nanobiosensors. 26,27 The core mechanism of an ECL-based biosensor depends on the interaction between the luminophore and the target protein or antigen.…”

Stable Electrochemiluminescence of CsPbBr3 Perovskite Nanocrystals Assisted by Graphene Oxide for Ultrasensitive Sensing

“…Unfortunately, due to substantial ionic salt properties, the PNCs even protected by oleic acid/oleylamine (OA/OAm) ligands will be dissolved rapidly in polar solvents or water as electrolytes under electrochemical conditions. Therefore, matrix encapsulation protocols to solve the instability problem and improve ECL performance for PNCs have been proposed by Zhu’s group, including SiO 2 matrix embedded by coreactants for self-enhancement and hollow carbon nitride nanosphere (HCNS) encapsulation as ratiometric ECL emitters. − The outstanding and stable PNC ECL signals have been acquired with a conductive and functionalized shell as a firm framework, meanwhile providing pathways for electron–hole transfer and recombination. However, the preparation methods of these core–shell isolated structures are often time-consuming accompanied by tedious processes.…”