Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS
Abstract As a unique Cairo pentagonal 2D material, palladium phosphide sulfide (PdPS) has garnered immense interests due to its excellent optoelectronic properties, anisotropic electronic transport behavior, and good air‐stability. In addition, its puckered pentagon structure renders an ultralow the...
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Wiley-VCH
2025-05-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202400634 |
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| author | Zehao Yu Meilin Li Yu Yang Peng Yu Ady Suwardi Lifa Zhang Yunshan Zhao |
| author_facet | Zehao Yu Meilin Li Yu Yang Peng Yu Ady Suwardi Lifa Zhang Yunshan Zhao |
| author_sort | Zehao Yu |
| collection | DOAJ |
| description | Abstract As a unique Cairo pentagonal 2D material, palladium phosphide sulfide (PdPS) has garnered immense interests due to its excellent optoelectronic properties, anisotropic electronic transport behavior, and good air‐stability. In addition, its puckered pentagon structure renders an ultralow thermal conductivity, making it a promising candidate for thermoelectrics applications. However, its thermoelectric transport has not been studied until now due to challenges in obtaining the atomic thin PdPS flake and further measurement. In this work, the thermoelectric performance of 2D PdPS is investigated. It is found that thermoelectric property of PdPS can be effectively manipulated via the delicate annealing treatment, which effectively regulate the defect concentrations. Remarkably, beyond regulating carrier concentrations and shifting the Fermi level closer to the conduction band, these defects also produce a large number of defect states. Consequently, ultra‐high power factor of 0.648 mW m−1 K−2 at room temperature is achieved, outperfoming other 2D materials reported to date. Furthermore, the anisotropic electronic transport properties of few‐layer PdPS are further studied and an extremely high electron anisotropic ratio of 47.37 are obtained at 20 K. The findings provide a new pathway for the development of nanoelectronic devices based on emerging 2D materials with high electronic anisotropy and thermoelectric performance. |
| format | Article |
| id | doaj-art-55af4aa735b2470a949afb2ba39ca2ed |
| institution | DOAJ |
| issn | 2199-160X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
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| series | Advanced Electronic Materials |
| spelling | doaj-art-55af4aa735b2470a949afb2ba39ca2ed2025-08-20T03:11:14ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-05-01116n/an/a10.1002/aelm.202400634Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPSZehao Yu0Meilin Li1Yu Yang2Peng Yu3Ady Suwardi4Lifa Zhang5Yunshan Zhao6Phonon Engineering Research Center of Jiangsu ProvinceCenter for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing210023ChinaPhonon Engineering Research Center of Jiangsu ProvinceCenter for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing210023ChinaPhonon Engineering Research Center of Jiangsu ProvinceCenter for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing210023ChinaState Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSchool of MaterialsSun Yat‐sen UniversityGuangzhou510275ChinaDepartment of Electronic EngineeringThe Chinese University of Hong KongNew Territories Hong Kong SAR 999077 ChinaPhonon Engineering Research Center of Jiangsu ProvinceCenter for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing210023ChinaPhonon Engineering Research Center of Jiangsu ProvinceCenter for Quantum Transport and Thermal Energy ScienceInstitute of Physics Frontiers and Interdisciplinary SciencesSchool of Physics and TechnologyNanjing Normal UniversityNanjing210023ChinaAbstract As a unique Cairo pentagonal 2D material, palladium phosphide sulfide (PdPS) has garnered immense interests due to its excellent optoelectronic properties, anisotropic electronic transport behavior, and good air‐stability. In addition, its puckered pentagon structure renders an ultralow thermal conductivity, making it a promising candidate for thermoelectrics applications. However, its thermoelectric transport has not been studied until now due to challenges in obtaining the atomic thin PdPS flake and further measurement. In this work, the thermoelectric performance of 2D PdPS is investigated. It is found that thermoelectric property of PdPS can be effectively manipulated via the delicate annealing treatment, which effectively regulate the defect concentrations. Remarkably, beyond regulating carrier concentrations and shifting the Fermi level closer to the conduction band, these defects also produce a large number of defect states. Consequently, ultra‐high power factor of 0.648 mW m−1 K−2 at room temperature is achieved, outperfoming other 2D materials reported to date. Furthermore, the anisotropic electronic transport properties of few‐layer PdPS are further studied and an extremely high electron anisotropic ratio of 47.37 are obtained at 20 K. The findings provide a new pathway for the development of nanoelectronic devices based on emerging 2D materials with high electronic anisotropy and thermoelectric performance.https://doi.org/10.1002/aelm.2024006342D mateiralselectrical anisotropyPdPSthermal conductivitythermoelectric |
| spellingShingle | Zehao Yu Meilin Li Yu Yang Peng Yu Ady Suwardi Lifa Zhang Yunshan Zhao Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS Advanced Electronic Materials 2D mateirals electrical anisotropy PdPS thermal conductivity thermoelectric |
| title | Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS |
| title_full | Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS |
| title_fullStr | Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS |
| title_full_unstemmed | Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS |
| title_short | Multifunctional Native Defects Boosting the Thermoelectric Transport in Few‐Layer PdPS |
| title_sort | multifunctional native defects boosting the thermoelectric transport in few layer pdps |
| topic | 2D mateirals electrical anisotropy PdPS thermal conductivity thermoelectric |
| url | https://doi.org/10.1002/aelm.202400634 |
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