ZnS blue-light-emitting diodes with an external quantum efficiency of 5×10−4
- 15 December 1975
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 27 (12), 697-699
- https://doi.org/10.1063/1.88350
Abstract
ZnS diodes emitting a stable and bright blue light with forward biases above 5 V are investigated. The external quantum efficiency for the diode is as high as 5×10−4 at room temperature. The presence of a thin high‐resistivity ZnS layer on the low‐resistivity ZnS is essential for the present diode. The fairly high efficiency is accounted for by a relevant mechanism of the donor‐acceptor–pair emission.Keywords
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