Influence of sodium concentration on the optoelectronic properties of silicon clathrate films

AK Bharwal, R Vollondat, C Tamin… - ACS Applied Energy …, 2024 - ACS Publications
Due to their original optoelectronic properties and cage-like structure, type-II silicon clathrate
(Na x Si136) films are investigated as a new silicon-based material for energy applications …

A Novel Technique for Controlling Anisotropic Ion Diffusion: Bulk Single‐Crystalline Metallic Silicon Clathrate

S Iwasaki, H Morito, T Komine, K Morita… - Advanced …, 2022 - Wiley Online Library
Na‐free Si clathrates consisting only of Si cages are an allotrope of diamond‐structured Si.
This material is promising for various device applications, such as next‐generation …

Characterization of low sodium type II silicon clathrate film spin dynamics

JP Briggs, Y Liu, PC Taylor, M Singh, RT Collins… - Applied Physics …, 2024 - pubs.aip.org
Type II Si clathrate is a Si-based, crystalline alternative to diamond silicon with interesting
optoelectronic properties. Here, a pulsed electron paramagnetic resonance study of the spin …

Structural Origin of Reversible Li Insertion in Guest‐Free, Type‐II Silicon Clathrates

A Dopilka, JM Weller, A Ovchinnikov… - Advanced Energy …, 2021 - Wiley Online Library
The guest‐free, type‐II Si clathrate (Si136) is an open cage polymorph of Si with structural
features amenable to electrochemical Li storage. However, the detailed mechanism for …

A fabrication method for type-II Ge clathrate film by annealing of Ge film covered with Na layer

R Kumar, Y Hazama, F Ohashi, HS Jha, T Kume - Thin Solid Films, 2021 - Elsevier
A simplistic and improved technique was employed for type-II Ge clathrate film fabrication on
the sapphire substrate. This method involves the deposition of metal Na layer onto …

Group IV clathrates for photovoltaic applications

T Kume, F Ohashi, S Nonomura - Japanese Journal of Applied …, 2017 - iopscience.iop.org
Recent studies on type-II Si/Ge clathrates for photovoltaic (PV) applications are reviewed.
The band-gap energies (E g) experimentally estimated for Si and Ge clathrates are …

Solid-state electrochemical synthesis of silicon clathrates using a sodium-sulfur battery inspired approach

A Dopilka, A Childs, S Bobev… - Journal of The …, 2021 - iopscience.iop.org
Abstract Clathrates of Tetrel elements (Si, Ge, Sn) have attracted interest for their potential
use in batteries and other applications. Sodium-filled silicon clathrates are conventionally …

[HTML][HTML] Synthesis and characterization of type II silicon clathrate films with low Na concentration

Y Liu, WK Schenken, L Krishna, AAA Majid… - Applied Physics …, 2021 - pubs.aip.org
A two-step process for the synthesis of the silicon clathrate film on a diamond silicon wafer is
explored in detail. Key factors impacting the film quality are uncovered. We find that the …

Numerical simulation and optimization of a silicon clathrate-based solar cell n-Si136/p-Si2 using SCAPS-1D program

NA Mahammedi, H Gueffaf, B Lagoun, M Ferhat - Optical Materials, 2020 - Elsevier
The aim of this work is to optimize a prototype solar cell based on a real model with type-II
silicon clathrate Si 136 active layer. For that purpose, a simulation of a ITO/Ag/n-Si 136/p …

Enhancing Morphological and Optoelectronic Properties of Silicon Clathrate Films through Thermal Press Annealing and SF6 Treatment

AK Bharwal, JP Briggs, C Tamin… - ACS Applied Energy …, 2025 - ACS Publications
Although silicon clathrates were discovered about 60 years ago, there has been little
research on diverse applications of such materials beyond thermoelectrics. With a direct …