Journal ArticleDOI
Reinforcement of power factor in N-type multiphase thin film of Si1−x−yGexSny by mitigating the opposing behavior of Seebeck coefficient and electrical conductivity
Huajun Lai,Ying Peng,Jie Gao,Haili Song,Masashi Kurosawa,Osamu Nakatsuka,Tsunehiro Takeuchi,Lei Miao,Lei Miao +8 more
TLDR
In this article, an N-type Si1−x−yGexSny thin film was used for thermoelectric (TE) application with the strategy of metallic modulation doping for enhancing its power factor.Abstract:
As the first-generation semiconductor, silicon (Si) exhibits promising prospects in thermoelectric (TE) convention application with the advantages of un-toxic, abundant, robust, and compliant to the integrated circuit. However, Si-based TE materials are always implemented for high-temperature application and deficient at room temperature (RT) ambience. This study displays an N-type Si1−x−yGexSny thin film by carrying out the strategy of metallic modulation doping for enhancing its power factor (PF). It was distinct to observe the extra carriers poured from the precipitated Sn particles without prominent degradation of mobility while sustaining appreciable thermal conductivity. The PF of 12.21 μW cm−1 K−2 and zT of 0.27 were achieved at 125 °C, which illustrated the significant potential for implementation at near RT ambiance.read more
Citations
More filters
Journal ArticleDOI
Significantly (00l)-textured Ag2Se thin films with excellent thermoelectric performance for flexible power applications
Zhuanghao Zheng,Yi-liu Li,J. Niu,Meng Wei,Dong-liang Zhang,Yiming Zhong,Muhammad Nisar,Adeel Abbas,Shuo Chen,Fu Li,Guangxing Liang,Ping Fan,Yue-Xing Chen +12 more
TL;DR: In this article , a flexible thermoelectric power generation is proposed for powering wearable electronic devices and chip-sensor of internet-of-things (IoT), but the performance of n-type flexible thin film limits its application.
Journal ArticleDOI
Recent Advances on Thermoelectric Silicon for Low-Temperature Applications
Dario Narducci,Federico Giulio +1 more
TL;DR: In this article , the authors present and discuss advances of research on silicon and related materials for thermoelectric applications, mostly focusing on the comparison between the two strategies deployed to increase its performance, namely either reducing its thermal conductivity or, in polycrystalline materials, increasing its power factor.
Journal ArticleDOI
Sn-incorporation effect on thermoelectric properties of Sb-doped Ge-rich Ge1−x−y Si x Sn y epitaxial layers grown on GaAs(001)
Masashi Kurosawa,Masaya Nakata,Tianzuo Zhan,Motohiro Tomita,Takanobu Watanabe,Osamu Nakatsuka +5 more
TL;DR: In this article , the authors investigated the effect of Sn incorporation on the thermoelectrical characteristics of n-type Ge-rich Si-rich Ge1−x−y Si x Sn y layers.
Journal ArticleDOI
Enhanced Thermoelectric Properties of Cu2Se Flexible Thin Films by Optimizing Growth Temperature and Elemental Composition
Yi-liu Li,Yi Jun Zhong,Dong-liang Zhang,J. Niu,Muhammad Nisar,Meng Wei,Guangxing Liang,Ping Fan,Zhuanghao Zheng +8 more
Journal ArticleDOI
Realizing high thermoelectric performance for p-type SiGe in medium temperature region via TaC compositing
Zheng Fan,Jisheng Liang,Junliang Chen,Ying Peng,Hua-jin Lai,Jian Nong,Chengyan Liu,Wangyang Ding,Lei Miao +8 more
TL;DR: In this paper , a novel strategy for co-regulating thermoelectric transport parameters was proposed to achieve high thermal properties of p-type SiGe in the mid-temperature region by incorporating nano-TaC into SiGe combined ball milling with spark plasma sintering.
References
More filters
Journal ArticleDOI
Modified Scherrer Equation to Estimate More Accurately Nano-Crystallite Size Using XRD
TL;DR: In this article, a modified Scherrer equation (MSE) method was proposed to calculate the nano-scale size of bovine bone using XRD radiation of wavelength λ (nm) from measuring full width at half maximum of peaks (β) in radian located at any 2π in the pattern.
Journal ArticleDOI
Enhancement of Thermoelectric Properties by Modulation-Doping in Silicon Germanium Alloy Nanocomposites
Bo Yu,Mona Zebarjadi,Hui Wang,Kevin Lukas,Hengzhi Wang,Dezhi Wang,Cyril Opeil,Mildred S. Dresselhaus,Gang Chen,Zhifeng Ren +9 more
TL;DR: An alternative materials design is reported, using alloy Si(70) Ge(30) instead of Si as the nanoparticles and Si(95)Ge(5) as the matrix, to increase the power factor but not the thermal conductivity, leading to a ZT of 1.3 ± 0.1 at 900 °C.
Journal ArticleDOI
Energy Filtering of Charge Carriers: Current Trends, Challenges, and Prospects for Thermoelectric Materials
Chhatrasal Gayner,Yaron Amouyal +1 more
Journal ArticleDOI
Thermoelectric properties of pressure-sintered Si0.8Ge0.2 thermoelectric alloys
TL;DR: In this article, the thermoelectric properties of 28 sintered Si(0.8)Ge (0.2) alloys, heavily doped with either B or P and prepared from powders with median particle sizes ranging from about 1 to over 100 microns, have been determined from 300 to 1300 K.
Journal ArticleDOI
High-performance thermoelectric nanocomposites from nanocrystal building blocks.
Maria Ibáñez,Zhishan Luo,Aziz Genç,Laura Piveteau,Laura Piveteau,Silvia Ortega,Doris Cadavid,Oleksandr Dobrozhan,Yu Liu,Maarten Nachtegaal,Mona Zebarjadi,Jordi Arbiol,Jordi Arbiol,Maksym V. Kovalenko,Maksym V. Kovalenko,Andreu Cabot,Andreu Cabot +16 more
TL;DR: A simple and versatile bottom–up strategy based on the assembly of colloidal nanocrystals to produce consolidated yet nanostructured thermoelectric materials that exhibit reduced thermal conductivities and higher charge carrier concentrations and mobilities than PbS nanomaterial is presented.