Facile Surfactant-Free Synthesis of p-Type SnSe Nanoplates with Exceptional Thermoelectric Power Factors.
A surfactant-free solution methodology, simply using water as a solvent, has been developed for the straightforward synthesis of single-phase orthorhombic SnSe nanoplates in gram quantities. Individual nanoplates are composed of {100} surfaces with {011} edge facets. Hot-pressed nanostructured compacts (Eg ≈0.85 eV) exhibit excellent electrical conductivity and thermoelectric power factors (S(2) σ) at 550 K. S(2) σ values are 8-fold higher than equivalent materials prepared using citric acid as a structure-directing agent, and electrical properties are comparable to the best-performing, extrinsically doped p-type polycrystalline tin selenides. The method offers an energy-efficient, rapid route to p-type SnSe nanostructures.
WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
Guang
G
Han
Institute of Chemical Sciences and Centre for Advanced Energy Storage & Recovery, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
Srinivas R
SR
Popuri
EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
Heather F
HF
Greer
Institute of Chemical Sciences and Centre for Advanced Energy Storage & Recovery, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK.
Jan-Willem G
0000-0003-3947-2024
JW
Bos
EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
Wuzong
W
Zhou
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Andrew R
AR
Knox
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Andrea
A
Montecucco
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Jonathan
J
Siviter
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Elena A
EA
Man
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Martin
M
Macauley
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Douglas J
DJ
Paul
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Wen-Guang
WG
Li
School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK.
Manosh C
MC
Paul
School of Engineering, Cardiff University, Cardiff, CF24 3AA, UK.
Min
M
Gao
School of Engineering, Cardiff University, Cardiff, CF24 3AA, UK.
Tracy
T
Sweet
Materials Science Centre, School of Materials, University of Manchester, Manchester, M13 9PL, UK.
Robert
R
Freer
Materials Science Centre, School of Materials, University of Manchester, Manchester, M13 9PL, UK.
Feridoon
F
Azough
Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK.
Hasan
H
Baig
Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK.
Nazmi
N
Sellami
Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK.
Tapas K
TK
Mallick
WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK. Duncan.Gregory@glasgow.ac.uk.
Duncan H
0000-0002-4585-3280
DH
Gregory
nanomaterials; structures; synthesis; thermoelectrics; tin selenide