Improved Electroluminescence from nc-Si Film Embedded in p-i-n Structure LED

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Abstract:

Intensive electroluminescence (EL) visible to the naked eyes is observed from p–i–n structure light emitting diodes with nanocrystalline Si (nc-Si) film as the luminescent layer. It is found the luminescence intensity increases by 20 times compared with that of nc-Si film without p-i-n structure and the turn-on voltage is sharply reduced. Combined with I-V and TEM analysis, the improved EL is attributed to the enhancement of carrier injection probability of nc-Si inserted in p-i-n structure.

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177-180

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September 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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