求翻译：1907年Henry Joseph Round 第一次在一块碳化硅里观察到电致发光现象。由于其发出的黄光太暗，不适合实际应用；更难处在于碳化硅与电致发光不能很好的适应，研究被摒弃了。二十年代晚期Bernhard Gudden和Robert Wichard 在德国使用从锌硫化物与铜中提炼的的黄磷发光。再一次因发光暗淡而停止。是什么意思？

1907, Henry Joseph Round first observed in a silicon carbide in the electroluminescence phenomenon. Issued because of its dark yellow, not suitable for practical applications; more difficulty is that silicon carbide and the EL are not well adapted to study to be abandoned. The late twenties Bernhard

1907 Henry Joseph Round first in silicon carbide, observed a piece -- electro luminescence phenomena. Since the issue of yellow light too dark, not suitable for practical applications; more difficulty lies in silicon carbide and electric OLEDs could not be a very good adaptation, the study was aband

In 1907 Henry Joseph Round first time observed the electroluminescence phenomenon together in the silicon carbide.Because it sends out the yellow light too is dark, does not suit the practical application; The difficulty lies in the silicon carbide and the electroluminescence cannot the very good ad

1907 Henry Joseph Round first observed in a piece of silicon carbide in the phenomenon of electroluminescence. Due to which a yellow light is too dark, not suitable for practical application; difficulty of silicon carbide and Electroluminescent not well adapt, research was abandoned. Late 20 Bernhar

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