Year: 2012
Type: article
Abstract: Power-generation devices have been developed that use thermoelectric (TE) energy to convert waste heat into electrical energy.Their effi ciency depends on the TE properties of the materials and the temperature gradient across the devices.Cu 2 Ga 4 Te 7 has been reported to have a relatively high thermoelectric fi gure of merit (ZT ).However, the TE properties of Cu 2 In 4 Te 7 , which has the same defect zinc-blende structure, have been hardly investigated and are addressed in this Letter.In the Cu 2 In 4 Te 7 structure, a seventh of the cation sites are structural vacancies.As a result of phonon scattering by structural vacancies, Cu 2 In 4 Te 7 exhibits low lattice thermal conductivity and thus a relatively high thermoelectric fi gure of merit.
Source: physica status solidi (b)
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4243645598