G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/015 (2006.01) G02F 1/017 (2006.01) G02F 1/355 (2006.01)
Patent
CA 2065247
By forming quantum well (QW) structures with two different heterojunctions having different band offsets it is possible to form QWs having dipoles when subjected to optical excitation. The presence of a dipole in a narrow enough well results in QWs having absorption edges which, unlike those of conventional QWs, can be shifted to the blue by application of an electric field of appropriate polarity.
En formant des structures à puits quantiques avec deux hétérojonctions différentes à décalages de bande différents, on peut former des puits quantiques comportant des dipôles quand on les soumet à une excitation lumineuse. La présence d'un dipôle dans un puits suffisamment étroit donne des puits quantiques ayant des discontinuités d'absorption qui, contrairement à celles des puits quantiques courants, peuvent être décalées vers le bleu par l'application d'un champ électrique de signe approprié.
British Telecommunications Public Limited Company
G. Ronald Bell & Associates
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