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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2510.14554 |
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| _version_ | 1866909849836584960 |
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| author | Herklotz, F. Lavrov, E. V. Hobson, T. D. C. Shalvey, T. P. Major, J. D. Durose, K. |
| author_facet | Herklotz, F. Lavrov, E. V. Hobson, T. D. C. Shalvey, T. P. Major, J. D. Durose, K. |
| contents | We report persistent photoconductivity in $p$-type Sb$_2$Se$_3$ single crystals doped with Cd or Zn, where enhanced conductivity remains for hours after illumination ceases at temperatures below $\sim$25~K. Comparative transport and infrared absorption measurements, including on $n$-type Cl-doped counterparts, reveal strong indications that hole transport in Sb$_2$Se$_3$ is more strongly affected by intrinsic carrier scattering than electron transport. These results point to a fundamental asymmetry in charge carrier dynamics and highlight the potential role of polaronic effects in limiting hole mobility in this quasi-one-dimensional semiconductor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_14554 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Contrasting properties of free carriers in $n$- and $p$-type Sb$_2$Se$_3$ Herklotz, F. Lavrov, E. V. Hobson, T. D. C. Shalvey, T. P. Major, J. D. Durose, K. Materials Science We report persistent photoconductivity in $p$-type Sb$_2$Se$_3$ single crystals doped with Cd or Zn, where enhanced conductivity remains for hours after illumination ceases at temperatures below $\sim$25~K. Comparative transport and infrared absorption measurements, including on $n$-type Cl-doped counterparts, reveal strong indications that hole transport in Sb$_2$Se$_3$ is more strongly affected by intrinsic carrier scattering than electron transport. These results point to a fundamental asymmetry in charge carrier dynamics and highlight the potential role of polaronic effects in limiting hole mobility in this quasi-one-dimensional semiconductor. |
| title | Contrasting properties of free carriers in $n$- and $p$-type Sb$_2$Se$_3$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2510.14554 |