Universal Ensemble-Embedding Graph Neural Network for Direct Prediction of Optical Spectra from Crystal Structures
Journal
Advanced Materials
Journal Volume
36
Journal Issue
46
Start Page
2409175
ISSN
15214095
09359648
Date Issued
2024
Author(s)
Abstract
Optical properties in solids, such as refractive index and absorption, hold vast applications ranging from solar panels to sensors, photodetectors, and transparent displays. However, first-principles computation of optical properties from crystal structures is a complex task due to the high convergence criteria and computational cost. Recent progress in machine learning shows promise in predicting material properties, yet predicting optical properties from crystal structures remains challenging due to the lack of efficient atomic embeddings. Here, Graph Neural Network for Optical spectra prediction (GNNOpt) is introduced, an equivariant graph-neural-network architecture featuring universal embedding with automatic optimization. This enables high-quality optical predictions with a dataset of only 944 materials. GNNOpt predicts all optical properties based on the Kramers-Kronig relations, including absorption coefficient, complex dielectric function, complex refractive index, and reflectance. The trained model is applied to screen photovoltaic materials based on spectroscopic limited maximum efficiency and search for quantum materials based on quantum weight. First-principles calculations validate the efficacy of the GNNOpt model, demonstrating excellent agreement in predicting the optical spectra of unseen materials. The discovery of new quantum materials with high predicted quantum weight, such as SiOs, which host exotic quasiparticles with multifold nontrivial topology, demonstrates the potential of GNNOpt in predicting optical properties across a broad range of materials and?applications.
Subjects
Equivariant Neural Networks
Kramers-kronig Relations
Machine Learning
Optical Spectra
Photovoltaic Materials
Quantum Materials
Crystal Atomic Structure
Glass Ceramics
Graph Embeddings
Graph Neural Networks
Health Risks
Nanocrystals
Network Embeddings
Network Theory (graphs)
Equivariant Neural Network
Kramers-kronig
Machine-learning
Neural-networks
Optical Spectrum
Optical-
Photovoltaic Materials
Property
Quantum Material
Kramers-kronig Relations
Absorption
Article
Controlled Study
Crystal Structure
Electric Potential
Machine Learning
Nerve Cell Network
Optics
Pharmaceutics
Prediction
Refraction Index
Sensor
Publisher
John Wiley and Sons Inc
Type
journal article