| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7118709 | Materials Science in Semiconductor Processing | 2015 | 7 Pages |
Abstract
High-purity germanium crystals approximately 12Â cm in diameter were grown in a hydrogen atmosphere using the Czochralski method. The dislocation density of the crystals was determined to be in the range of 2000-4200Â cmâ2, which meets a requirement for use as a radiation detector. The axial and radial distributions of impurities in the crystals were measured and are discussed. A planar detector was also fabricated from one of the crystals and then evaluated for electrical and spectral performance. Measurements of gamma-ray spectra from Cs-137 and Am-241 sources demonstrate that the detector has excellent energy resolution.
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Authors
Guojian Wang, Mark Amman, Hao Mei, Dongming Mei, Klaus Irmscher, Yutong Guan, Gang Yang,