Effective dopants for CuI single nanocrystals as a promising room temperature thermoelectric material

Salah, Numan; Abusorrah, Abdullah; Salah, Yousef N.; Almasoudi, M.; Baghdadi, Neazar; Alshahri, Ahmed; Koumoto, Kunihito

doi:10.1016/j.ceramint.2020.07.209

Cited by 20 publications

(30 citation statements)

References 35 publications

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“…The bare CuI lm showed diffraction peaks at 25.5 , 29.5 , 42.2 , 49.9 2q which correspond to the (111), (200), (220), and (311) planes, respectively. This conrms the cubic crystal structure of CuI (DB card number 01-077-9398) which is consistent with previously reported results 23. The XRD patterns of the Al-doped CuI thin lm samples are comparable to those of the bare samples, with no impurity phases.…”

supporting

confidence: 91%

“…This conrms the cubic crystal structure of CuI (DB card number 01-077-9398) which is consistent with previously reported results. 23 The XRD patterns of the Al-doped CuI thin lm samples are comparable to those of the bare samples, with no impurity phases. For the Al-doped CuI thin lm samples, due to the reduced ionic radius of Al 3+ (53 pm) compared to that of Cu + (77 pm), the diffraction peaks showed a modest shi towards higher 2q values (Fig.…”

Section: Electrochemical Measurementsmentioning

confidence: 77%

“…This confirms the cubic crystal structure of CuI (DB card number 01-077-9398) which is consistent with previously reported results. 23 …”

Section: Resultsmentioning

confidence: 99%

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Electrochemical capacitive performance of thermally evaporated Al-doped CuI thin films

et al. 2021

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confidence: 91%

Section: Electrochemical Measurementsmentioning

confidence: 77%

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Electrochemical capacitive performance of thermally evaporated Al-doped CuI thin films

et al. 2021

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“…Further, 300 nm thick CuI film doped with terbium (Tb) single nanocrystal demonstrated a ZT max value of 0.29. The illustration of the Tb-doped CuI structure is given in Figure 2 f, which can be operated at 430 K [ 13 ]. The current ZT progress of CuI-based TE materials is given in Table 1 .…”

Section: Temperature-dependent Classification Of Low-toxic Earth-abundant Thermoelectric Materialsmentioning

confidence: 99%

“…Copyright © 2019, Royal Society of Chemistry, ( e ) Schematic representation of transparent flexible copper iodide thin-film thermoelectric generator (p-type material is CuI and n-type material is GZO) with 17 p-n modules connected in series with indium tin oxide (ITO) using platinum wire, Reproduced with permission from [ 12 ]. Copyright © 2019, Royal Society of Chemistry, ( f ) Illustration of CuI (doped with terbium) single nanocrystal, Reproduced with permission from [ 13 ]. Copyright © 2020, Elsevier.…”

Section: Figurementioning

confidence: 99%

Low-Toxic, Earth-Abundant Nanostructured Materials for Thermoelectric Applications

2021

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This article presents recent research directions in the study of Earth-abundant, cost-effective, and low-toxic advanced nanostructured materials for thermoelectric generator (TEG) applications. This study’s critical aspect is to systematically evaluate the development of high-performance nanostructured thermoelectric (TE) materials from sustainable sources, which are expected to have a meaningful and enduring impact in developing a cost-effective TE system. We review both the performance and limitation aspects of these materials at multiple temperatures from experimental and theoretical viewpoints. Recent developments in these materials towards enhancing the dimensionless figure of merit, Seebeck coefficient, reduction of the thermal conductivity, and improvement of electrical conductivity have also been discussed in detail. Finally, the future direction and the prospects of these nanostructured materials have been proposed.

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Structural Modifications and Enhanced Thermoelectric Performance of CuI Nanoparticles Induced via Al‐Doping

Salah

Alshahrie

Aljaghtham

et al. 2022

Adv Elect Materials

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highly efficient TE materials that possess a high electrical conductivity (σ), large Seebeck coefficient (S), and low thermal conductivity (κ) is very important. The values of these TE properties are ultimately affecting the value of the dimensionless parameter figure of merit ZT, which evaluates the efficiency of TE materials, and it is expressed as S 2 σT/κ, where T is the absolute temperature. [1] In the last 7-8 decades many materials have been developed and tested for the TE efficiency. In the 1950s, Bi 2 Te 3 was emerged as a promising inorganic TE material, [2] n-type Bi 2 Te 3-x Se x and p-type Bi 2-x Sb x Te 3 [3] were further found to show higher TE performance. Since then, a wide variety of materials, such as oxides, sulfides, silicides, selenides, skutterudites, intermetallic compounds, organic polymers, etc., have been proposed and investigated for TE applications. [4][5][6][7][8][9] Nanocarbon materials and their composites are also studied extensively in recent years. [10][11][12] Most of these materials, however, still demonstrate low TE efficiency at low temperature range of 200-400 K.A limited number of TE materials such as Cu 2 Se, [13] Ag 2 Se, [14] Bi 2 Te 3 nanostructures, [15,16] and Bi 0.5 Sb 1.5 Te 3 /PEDOT:PSS composite, [17] have been developed to be used near the room temperature (RT). Another work was also continued to develop TE materials with high ZT such as Mg 3 Sb 2 -based, which exhibits ZT near 1. [18] Although, these efforts were performed mainly for developing TE materials at RT, evolving more TE materials at RT are still in the early stages. Many reports have recently identified that copper iodide (CuI) is a promising material, which demonstrates good TE performance near RT. [19][20][21][22][23][24] The gamma phase (zinc blende structure) of CuI (denoted as γ-CuI) has a wide band gap (3.1 eV) with electron holes as charge carriers and it is classified as a flexible transparent p-type semiconductor. CuI is an environmentally friendly material due to its nontoxicity and naturally abundant elements, id est copper and iodine. In this material, iodine is a heavy element which leads to reduce the thermal conductivity and therefore enhances TE efficiency. The γ-CuI has been investigated for several applications, such as transparent electrode for solar cells, RT blue-emitting devices, vacuum fluorescent, and field emission displays. [19] Many researches have produced CuI in different forms including nanoparticles (NPs) and evaluated them for TE applications. [19][20][21][22][23][24] Recently, the effect of doping CuI NPs with several activators to enhance the TE performance has been reported. Some of the activators such as terbium (Tb) and iron (Fe) Thermoelectric (TE) materials are of great importance for harvesting thermal energy from waste or solar heat. One of the promising TE materials is copper iodide (CuI), which is nontoxic, earth-abundant, and has a high Seebeck coefficient at room temperature (RT). The TE performance of CuI nanoparticles (NPs) is found to be further enhance...

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Effective dopants for CuI single nanocrystals as a promising room temperature thermoelectric material

Cited by 20 publications

References 35 publications

Electrochemical capacitive performance of thermally evaporated Al-doped CuI thin films

Electrochemical capacitive performance of thermally evaporated Al-doped CuI thin films

Low-Toxic, Earth-Abundant Nanostructured Materials for Thermoelectric Applications

Structural Modifications and Enhanced Thermoelectric Performance of CuI Nanoparticles Induced via Al‐Doping

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