We construct the two-dimensional (2D) excitonic solar cells based on type II vdW heterojunctions of Janus III-VI chalcogenide monolayers and investigate the performance of the device using the first principle. The calculated solar energy absorbance of InSSe/GaInSeand InSeTe/GaInSeheterojunctions is the order of 10cm. The predicted photoelectric conversion efficiency of the InSeTe/GaInSeheterojunction can reach up to 24.5%, which compares favorably with other previously studied 2D heterojunctions. The excellent performance of InSeTe/GaInSeheterojunction originates from the fact that the built-in electric field at the interface of InSeTe/GaInSepromote the flow of the photogenerated electrons. The results suggest that 2D Janus Group-III chalcogenide heterojunction can be a good candidate for new optoelectronic nanodevices.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/1361-6528/acd788 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Spatially Isomeric Fulleropyrrolidines Enable Controlled Stacking of Perovskite Colloids for High-Performance Tin-Based Perovskite Solar Cells.
Angew Chem Int Ed Engl
January 2025
Huaqiao University College of Materials Science and Engineering, No.668 Jimei Avenue, Xiamen, Fujian, 361021, Xiamen, CHINA.
The advancement of tin-based perovskite solar cells (TPSCs) has been severely hindered by the poor controllability of perovskite crystal growth and the energy level mismatch between the perovskite and fullerene-based electron transport layer (ETL). Here, we synthesized three cis-configured pyridyl-substituted fulleropyrrolidines (PPF), specifically 2-pyridyl (PPF2), 3-pyridyl (PPF3), and 4-pyridyl (PPF4), and utilized them as precursor additives to regulate the crystallization kinetics during film formation. The spatial distance between the two pyridine groups in PPF2, PPF3, and PPF4 increases sequentially, enabling PPF4 to interact with more perovskite colloidal particles.
View Article and Find Full Text PDFConstruction of Linear Tetramer-type Acceptors for High-efficiency and High-stability Organic Solar Cells.
Angew Chem Int Ed Engl
January 2025
Shanghai Jiao Tong University, School of Chemistry and Chemical Engineering, 800 Dongchuan Road, Minhang, Shanghai, shanghai, CHINA.
The photovoltaic conversion efficiency (PCE) of organic solar cells (OSCs) has exceeded 20%, which has met the requirements for commercialisation. In the current stage, the main focus is to balance the performance and stability. It has been shown that all-polymer formulation can improve device stability, however, PCE is not in satifsfaction, and the batch-to-batch variation leads to quality control issues.
View Article and Find Full Text PDFOptimizing Sublattice Correlation to Enhance Stability and Charge Carrier Lifetime in Mixed Halide Perovskites.
Nano Lett
January 2025
Departments of Chemistry, and Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States.
A-site cations in ABX metal halide perovskites do not contribute to the frontier electronic states. They influence optoelectronic properties indirectly through interaction with the BX sublattice. By systematically investigating correlated motions of Cs cations and the PbX lattice (X = Cl, Br, I), we demonstrate that the interaction between the two subsystems depends on electronegativity and size of the X-site anion.
View Article and Find Full Text PDFThe Critical Isomerization Effect of Core Bromination on Nonfullerene Acceptors in Achieving High-Performance Organic Solar Cells with Low Energy Loss.
Adv Mater
December 2024
Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids and State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Highly efficient nonfullerene acceptors (NFAs) for organic solar cells (OSCs) with low energy loss (E) and favorable morphology are critical for breaking the efficiency bottleneck and achieving commercial applications of OSCs. In this work, quinoxaline-based NFAs are designed and synthesized using a synergistic isomerization and bromination approach. The π-expanded quinoxaline-fused core exhibits different bromination sites for isomeric NFAs, namely AQx-21 and AQx-22.
View Article and Find Full Text PDFExciton Transport in Perovskite Materials.
Adv Mater
December 2024
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
Halide perovskites have emerged as promising materials for a wide variety of optoelectronic applications, including solar cells, light-emitting devices, photodetectors, and quantum information applications. In addition to their desirable optical and electronic properties, halide perovskites provide tremendous synthetic flexibility through variation of not only their chemical composition but also their structure and morphology. At the heart of their use in optoelectronic technologies is the interaction of light with electronic excitations in the form of excitons.
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!