Improved charge carrier transport across grain boundaries in N‐type PbSe by dopant segregation
Abstract: Doping is an important and routine method to tune the properties of semiconductors. Dopants accumulated at grain boundaries (GBs) can exert a profound influence on microstructures and transport properties of heat and charge. To unravel the effect of dopant accumulation at GBs on the scattering of electrons, individual high-angle GBs in three PbSe samples doped with different amounts of Cu using a home-designed correlative characterization platform combining electron backscatter diffraction, microcircuit transport property measurements, and atom probe tomography are studied. The findings reveal that the segregation of Cu dopants to GBs reduces the GB potential barrier height. Once the GB phase reaches an equilibrium with saturated Cu, the extra Cu dopants distribute homogeneously inside the grains, compensating for vacancies and improving the electrical conductivity of the PbSe grains. The results correlate the Cu distribution at GBs and grains with local electrical properties, enlightening strategies for manipulating advanced functional materials by GB segregation engineering
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Small science. - 5, 3 (2025) , 2300299, ISSN: 2688-4046
- Klassifikation
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Physik
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2024
- Urheber
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Zhang, Huaide
Shen, Minghao
Stenz, Christian
Teichrib, Christian
Wu, Riga
Schäfer, Lisa
Nan, Lin
Zhou, Yiming
Zhou, Chongjian
Cojocaru-Mirédin, Oana
Wuttig, Matthias
Yu, Yuan
- DOI
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10.1002/smsc.202300299
- URN
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urn:nbn:de:bsz:25-freidok-2534009
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:22 MESZ
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Beteiligte
- Zhang, Huaide
- Shen, Minghao
- Stenz, Christian
- Teichrib, Christian
- Wu, Riga
- Schäfer, Lisa
- Nan, Lin
- Zhou, Yiming
- Zhou, Chongjian
- Cojocaru-Mirédin, Oana
- Wuttig, Matthias
- Yu, Yuan
- Universität
Entstanden
- 2024
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