A Versatile System for Photoconductance Decay Measurement Across a Wide Range of Semiconductor Materials
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914302154244096 |
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| author | Bojtor, A. Krisztian, D. Parada, G. Korsos, F. Kollarics, S. Csosz, G. Markus, B. G. Forro, L. Simon, F. |
| author_facet | Bojtor, A. Krisztian, D. Parada, G. Korsos, F. Kollarics, S. Csosz, G. Markus, B. G. Forro, L. Simon, F. |
| contents | Time-resolved photoconductivity is widely used to characterize non-equilibrium charge-carrier lifetime, impurity content, and solar cell efficiency in a broad range of semiconductors. Most measurements are limited to the detection of reflection of electromagnetic radiation at a single frequency and a single photoexciting light wavelength. We present a time-resolved photoconductivity instrument that enables broadband frequency detection (essentially from DC to 100 GHz), temperature-dependent measurements, and multiple excitation photon energy. The measurement is realized with the help of a coplanar waveguide, which acts as an efficient antenna and whose performance was tested over 10 MHz-10 GHz. The instrument enables the study of surface and bulk charge-recombination specific processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_16892 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Versatile System for Photoconductance Decay Measurement Across a Wide Range of Semiconductor Materials Bojtor, A. Krisztian, D. Parada, G. Korsos, F. Kollarics, S. Csosz, G. Markus, B. G. Forro, L. Simon, F. Materials Science Time-resolved photoconductivity is widely used to characterize non-equilibrium charge-carrier lifetime, impurity content, and solar cell efficiency in a broad range of semiconductors. Most measurements are limited to the detection of reflection of electromagnetic radiation at a single frequency and a single photoexciting light wavelength. We present a time-resolved photoconductivity instrument that enables broadband frequency detection (essentially from DC to 100 GHz), temperature-dependent measurements, and multiple excitation photon energy. The measurement is realized with the help of a coplanar waveguide, which acts as an efficient antenna and whose performance was tested over 10 MHz-10 GHz. The instrument enables the study of surface and bulk charge-recombination specific processes. |
| title | A Versatile System for Photoconductance Decay Measurement Across a Wide Range of Semiconductor Materials |
| topic | Materials Science |
| url | https://arxiv.org/abs/2411.16892 |