Laser‐Generated Supranano Liquid Metal as Efficient Electron Mediator in Hybrid Perovskite Solar Cells

Abstract

Creating colloids of liquid metal with tailored dimensions has been of technical significance in nano‐electronics while a challenge remains for generating supranano (<10 nm) liquid metal to unravel the mystery of their unconventional functionalities. Present study pioneers the technology of pulsed laser irradiation in liquid from a solid target to liquid, and yields liquid ternary nano‐alloys that are laborious to obtain via wet‐chemistry synthesis. Herein, the significant role of the supranano liquid metal on mediating the electrons at the grain boundaries of perovskite films, which are of significance to influence the carriers recombination and hysteresis in perovskite solar cells, is revealed. Such embedding of supranano liquid metal in perovskite films leads to a cesium‐based ternary perovskite solar cell with stabilized power output of 21.32% at maximum power point tracing. This study can pave a new way of synthesizing multinary supranano alloys for advanced optoelectronic applications.

Recent advances on interfacial engineering of hematite photoanodes for viable photo‐electrochemical water splitting

“…The hematite‐based photoelectrolysis cells for spontaneously driving overall water splitting reaction by solar energy, 155,156 consisting of the PEC/photovoltaic (PV) tandem cells and p‐n PEC tandem cells 157‐160 . For PEC/PV tandem cells, the PV cell, instead of external power, can directly supply the necessary bias for the PEC water splitting 157 .…”

Embedding of Ti3C2TxNanocrystals in MAPbI3Microwires for Improved Responsivity and Detectivity of Photodetector

“…For instance, the chloride functionalized carbon dots, liquid metal nanoparticles, and WO 3 nanoparticles with rich oxygen-vacancies improve the charge transport of perovskite film to enhance the performances of perovskite solar cells. [34][35][36] The laser generated metal oxide nanoparticles boost the carrier diffusion length to enhance the efficiency of water splitting of BiVO 4 anode. [37] Therefore, embedding high conductive solid nanoparticles into perovskite microwires through laser irradiation in liquid technique is a promising method to endow the improvement of charge transport of microwires and mobility of overall film for improving the performances of perovskite PDs.…”

Mini/Micro/Nano Scale Liquid Metal Motors

“…In most cases, the composition of this oxide skin is mostly Ga 2 O 3 , with a little fraction of In or Sn. The co-existence of LM and this oxide exhibits unique physiochemical properties such as facilitating electron extraction [71], improving photocatalytic activity [72], and providing a strategy for adjusting surface plasmon resonances [66,73]. Besides, the size, shape, morphology, thermal, electrical, and optical properties of LMNPs are influenced by the LM oxide significantly, which is described in the respective sections.…”