Improved thermoelectric performance of Cu2O-Cr/Sn composite powder

Zhang, Mengyuan; Liang, Siwei

doi:10.1016/j.cplett.2021.138722

Cited by 6 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cu 2 O is a p-type semiconductor material with a narrow bandgap (2.0 eV∼2.2 eV), which has good photoelectric effect properties, like high chemical stability, high direct absorption rate of visible (Vis) light [6][7][8][9][10][11]. Moreover, it is cheap for its abundant reserving on the Earth.…”

Section: Introductionmentioning

confidence: 99%

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

Qirong¹,

Luo²,

Zhang³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

Cu2O has the advantages of low price, stable chemical properties, and high visible light absorption rate. It is a very promising hole transport material material in solar cells. However, the pure phase Cu2O has a low hole transport rate, which can be improved it by means of doping or something else. In this paper, based on the first-principles, the performance of different amounts of S, Se, and Te doped Cu2O are calculated, it is found that the Te-doped Cu2O performance is pronounced, with the energy gap reduction (1.871eV), there appear free electron generating, the Highest Occupied Molecular Orbital energy level is matched (-5.463eV), and the absorption coefficient in the ultraviolet and visible range improved, nearly 103.07% at 3.26 eV, the reflectance increased to, for the point 11.7 eV, 76%, and the loss function value is very small in the visible light region (less than 0.1).

show abstract

Section: Introductionmentioning

confidence: 99%

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

Qirong¹,

Luo²,

Zhang³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

Section: Energy Filtering By Metal Secondary Phasesmentioning

confidence: 72%

“…Experimental results have proved this concept [82][83][84]: for instance, Pb precipitates in the matrix of n-type PbTe, intrinsically doped with excess Pb, increased the Seebeck coefficient and the average resistivity from −98 µV/K and 1.2 mΩ cm for Pb 1.03 Te to −130 µV/K, and 3.2 mΩ cm for Pb 1.06 Te at 300 K, respectively [82]. The addition of metallic Sn and Cr to Cu 2 O doubled the Seebeck coefficient from 700 µV/K to 1400 µV/K [84]. Platinum nanocrystals created energy barriers in p-type Sb 2 T 3 thin films [83] and caused a large reduction in carrier mobility in about 2.5 orders of magnitude due to the additional scattering of charge carriers compared to Sb 2 Te 3 films without Pt nanocrystals.…”

Section: Energy Filtering By Metal Secondary Phasesmentioning

confidence: 72%

Recent Progress in Multiphase Thermoelectric Materials

Fortulan

Yamini

2021

Materials

View full text Add to dashboard Cite

Thermoelectric materials, which directly convert thermal energy to electricity and vice versa, are considered a viable source of renewable energy. However, the enhancement of conversion efficiency in these materials is very challenging. Recently, multiphase thermoelectric materials have presented themselves as the most promising materials to achieve higher thermoelectric efficiencies than single-phase compounds. These materials provide higher degrees of freedom to design new compounds and adopt new approaches to enhance the electronic transport properties of thermoelectric materials. Here, we have summarised the current developments in multiphase thermoelectric materials, exploiting the beneficial effects of secondary phases, and reviewed the principal mechanisms explaining the enhanced conversion efficiency in these materials. This includes energy filtering, modulation doping, phonon scattering, and magnetic effects. This work assists researchers to design new high-performance thermoelectric materials by providing common concepts.

show abstract

“…As a typical p-type semiconductor with a wide light absorption range, Cu 2 O has the rapid recombination of photogenerated charges and serious photocorrosion. [61,62] Numerous ways such as morphology regulation, [63,64] metal doping, [65,66] non-metal doping, [67] noblemetal deposition, [68] and heterojunction construction [69] were adopted towards enhancing photocatalytic performance of Cu 2 O. Among these strategies, element doping and morphology modification improve photocatalytic activity by increasing the disordered distribution and an abundant number of recombination centers, [70,71] respectively.…”

Section: Introductionmentioning

confidence: 99%

Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Wang

Yang

et al. 2022

ChemistrySelect

View full text Add to dashboard Cite

Photocatalytic degradation technology, using solar energy as the driving force, is considered the most possible alternative to remediate environmental pollution. And it is essential to find a stable and efficient photocatalyst. As promising semiconductor-based photocatalysts, Cu 2 O has acquired massive attention owning to its high conduction band energy, superior visiblelight response-ability, low cost, eco-friendly, and abundance. However, the application of origin Cu 2 O faces severe problems due to its photocorrosion and low photoinduced carrier separation. Consequently, it is necessary to improve its photo-stability and photocatalytic activity by carrying out numerous modification strategies, such as heterostructure construction. Herein, we first summarize the classification and operation principles of Cu 2 O-based type-II heterojunction. Then, the application of the Cu 2 O-based type-II heterojunction photocatalysts for the removal of tetracyclines, quinolones, and sulfonamides have been discussed. Finally, the pressing issues and perspectives in Cu 2 O-based type-II heterojunction photocatalysts application for degrading antibiotics have prospected.

show abstract

Improved thermoelectric performance of Cu2O-Cr/Sn composite powder

Cited by 6 publications

References 39 publications

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

Recent Progress in Multiphase Thermoelectric Materials

Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Contact Info

Product

Resources

About

Improved thermoelectric performance of Cu2O-Cr/Sn composite powder

Cited by 6 publications

References 39 publications

First-principles study of the crystal structure, electronic and optical properties of Cu2O1-xMx (M = S, Se, Te)

First-principles study of the crystal structure, electronic and optical properties of Cu2O1-xMx (M = S, Se, Te)

Recent Progress in Multiphase Thermoelectric Materials

Research Progress on Cu2O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics

Contact Info

Product

Resources

About

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

First-principles study of the crystal structure, electronic and optical properties of Cu₂O_1-xM_x (M = S, Se, Te)

Research Progress on Cu₂O‐based Type‐II Heterojunction Photocatalysts for Photocatalytic Removal of Antibiotics