Realization of n-type and enhanced thermoelectric performance of p-type BiCuSeO by controlled iron incorporation

Pan, Lin; Lang, Yudong; Zhao, Li‐Dong; Bérardan, David; Amzallag, E.; Xu, Chao; Gu, Yunfu; Chen, Changchun; Shen, Xiadong; Lyu, Yinong; Lu, Chunhua; Wang, Yifeng

doi:10.1039/c8ta03521k

Cited by 50 publications

(46 citation statements)

References 27 publications

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“…It is normally reported that BiCuSeO samples exhibit higher TE performance along the direction perpendicular to the pressing direction . In this work, we had measured part of sample ( x = y = 0.08) along two directions, the result further confirmed the better performance along this directions (Figure ).…”

Section: Resultssupporting

confidence: 73%

“…It is normally reported that BiCuSeO samples exhibit higher TE performance along the direction perpendicular to the pressing direction. 32,33 In this work, we had measured part of sample (x = y = 0.08) along two directions, the result further confirmed the better performance along this directions ( Figure S3). Hence, we measured the thermoelectric properties along the direction perpendicular to the pressing direction for all samples, and inset figure of Figure 3B shows the schematic diagram of measurement direction.…”

Section: Methodssupporting

confidence: 64%

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Highly enhanced thermoelectric performance in BiCuSeO ceramics realized by Pb doping and introducing Cu deficiencies

Chen

Shi

et al. 2019

J Am Ceram Soc

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In recent years, BiCuSeO oxyselenides have been developed as a promising thermoelectric material. In this article, PbxBi1−xCu1−ySeO (x = y = 0, 0.02, 0.04, 0.06, and 0.08) are prepared by solid‐state reaction method and spark plasma sintering (SPS), and the combinatorial effects of Pb doping and Cu deficiencies on thermoelectric properties are investigated systematically. The transport properties are significantly enhanced due to the optimized carrier density, majorly contributing to the promotion of ZT values. As a result, the maximum ZT of 0.77 at 873 K and average ZT (from 300 to 873 K) of 0.50 are obtained for Pb0.06Bi0.94Cu0.94SeO sample. The values are 0.4 and 1.2 times, respectively, higher than that of pristine sample.

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Section: Resultssupporting

confidence: 73%

Section: Methodssupporting

confidence: 64%

Highly enhanced thermoelectric performance in BiCuSeO ceramics realized by Pb doping and introducing Cu deficiencies

Chen

Shi

et al. 2019

J Am Ceram Soc

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“…BiCuSeO is an intrinsic p -type semiconductor due to Bi and Cu vacancies. Recently, Pan et al realized n -type BiCuSeO by iron incorporation [ 117 ] and Zhang et al [ 118 ] presented the realization of n -type BiCuSeO by filling these vacancies with additional Bi and Cu and simultaneously introducing Br and I at the Se site for electron doping; the above resulted with Seebeck coefficients of up to −550

V K −1 .…”

Section: Oxides and Oxyselenidesmentioning

confidence: 99%

High Power Factor vs. High zT—A Review of Thermoelectric Materials for High-Temperature Application

Wolf

Hinterding

Feldhoff

2019

Entropy

134

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Energy harvesting with thermoelectric materials has been investigated with increasing attention over recent decades. However, the vast number of various material classes makes it difficult to maintain an overview of the best candidates. Thus, we revitalize Ioffe plots as a useful tool for making the thermoelectric properties of a material obvious and easily comparable. These plots enable us to consider not only the efficiency of the material by the figure of merit zT but also the power factor and entropy conductivity as separate parameters. This is especially important for high-temperature applications, where a critical look at the impact of the power factor and thermal conductivity is mandatory. Thus, this review focuses on material classes for high-temperature applications and emphasizes the best candidates within the material classes of oxides, oxyselenides, Zintl phases, half-Heusler compounds, and SiGe alloys. An overall comparison between these material classes with respect to either a high efficiency or a high power output is discussed.

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“…Best performing oxide‐based materials highlighting (A) highest σ, (B) low κ t and (C) ZT value via miscellaneous optimization techniques …”

Section: High Performance Inorganic Te Materialsmentioning

confidence: 99%

Inorganic thermoelectric materials: A review

et al. 2020

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Summary Thermoelectric generator, which converts heat into electrical energy, has great potential to power portable devices. Nevertheless, the efficiency of a thermoelectric generator suffers due to inefficient thermoelectric material performance. In the last two decades, the performance of inorganic thermoelectric materials has been significantly advanced through rigorous efforts and novel techniques. In this review, major issues and recent advancements that are associated with the efficiency of inorganic thermoelectric materials are encapsulated. In addition, miscellaneous optimization strategies, such as band engineering, energy filtering, modulation doping, and low dimensional materials to improve the performance of inorganic thermoelectric materials are reported. The methodological reviews and analyses showed that all these techniques have significantly enhanced the Seebeck coefficient, electrical conductivity, and reduced the thermal conductivity, consequently, improved ZT value to 2.42, 2.6, and 1.85 for near‐room, medium, and high temperature inorganic thermoelectric material, respectively. Moreover, this review also focuses on the performance of silicon nanowires and their common fabrication techniques, which have the potential for thermoelectric power generation. Finally, the key outcomes along with future directions from this review are discussed at the end of this article.

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Realization of n-type and enhanced thermoelectric performance of p-type BiCuSeO by controlled iron incorporation

Abstract: Fe-doping enables n-type BiCuSeO and improves the performances of p-type BiCuSeO.

Cited by 50 publications

References 27 publications

Highly enhanced thermoelectric performance in BiCuSeO ceramics realized by Pb doping and introducing Cu deficiencies

Highly enhanced thermoelectric performance in BiCuSeO ceramics realized by Pb doping and introducing Cu deficiencies

High Power Factor vs. High zT—A Review of Thermoelectric Materials for High-Temperature Application

Inorganic thermoelectric materials: A review

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