Journal ArticleDOI
Low temperature thermopower and electrical conductivity in highly conductive CuInO2 thin films
Bindu G. Nair,Gunadhor S. Okram,Johns Naduvath,T. Shripathi,Anis Fatima,Tarachand Patel,Rajani Jacob,K. Keerthi,Stephen K. Remillard,Rachel Reena Philip +9 more
TLDR
In this article, a detailed study on low temperature (6-300 K) electrical conductivity and Seebeck coefficient on copper indium oxide polycrystalline thin films deposited on soda lime glass substrates by a reactive evaporation method is presented.Abstract:
This is the first report on the detailed study on low temperature (6–300 K) electrical conductivity and Seebeck coefficient on copper indium oxide polycrystalline thin films deposited on soda lime glass substrates by a reactive evaporation method. These films, characterized using various experimental techniques, show the highest electrical conductivity (20 to 125 S cm−1) reported to date as well as n- and p- type conductivity. The electrical conductivity mechanisms, based on Mott's, Seto's and Arrhenius models, in different temperature regimes, comprise of variable range hopping, grain boundary effect and activated thermal conduction. Most interestingly, the thin films manifest a high thermoelectric power factor and absorption in the UV region, indicating their potential in thermoelectric and UV energy conversion device fabrication, respectively.read more
Citations
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Tin Incorporation in AgInSe2 Thin Films: Influence on Conductivity
TL;DR: In this article, a detailed analysis of the low temperature conductivity of AgInSe2 (AIS) and tin incorporated AIS:Sn is presented, which is attributed to donor and acceptor defect level formation, which has pushed the Fermi levels to ∼9 meV below the conduction band edge in n-type films and ∼3 meV above the valence band edge.
Journal ArticleDOI
A load-based thermopower measurement setup in the temperature range of 5–330 K
TL;DR: In this paper, the authors developed an automated precision load-based measurement setup for thermoelectric power (S) of different types of samples in the temperature range of 5 −330 K. This setup takes nearly 4 h for each run, and the typical error is within 5%.
Journal ArticleDOI
Low temperature carrier transport mechanism and photo-conductivity of WSe2
Manjot Kaur,Kulwinder Singh,Ishant Chauhan,Hardilraj Singh,Ram K. Sharma,Ankush Vij,Anup Thakur,Akshay Kumar +7 more
TL;DR: In this paper, the electrical-transport and temperature-dependent photoconductivity in tungsten diselenide (WSe2) thin films were investigated using different models.
Journal ArticleDOI
Low temperature electrical conductivity and seebeck coefficient of nanostructured CuSe thin films with Ga addition
Anitha Abraham,Tarachand,Gunadhor S. Okram,Rajani Jacob,P.V. Sreenivasan,Rachel Reena Philip +5 more
TL;DR: In this paper, electrical conductivity and Seebeck coefficient of nanostructured Ga added p-type CuSe thin films are investigated in the temperature range 6-300 k. The films were prepared by vacuum co-evaporation method and characterized by various tools like X-ray diffraction, scanning electron microscopy and energy dispersive analysis of X-rays, for their structural, morphological and compositional studies.
Posted Content
A New Load-based Thermopower Measurement Setup in the Temperature Range of 5 - 330 K
TL;DR: This is a report on the development of an automated precision load-based measurement setup for thermoelectric power (S) of different types of samples in the temperature range of 5-330 K.
References
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