6 research outputs found

    Eksitonska stanja u kvantnoj to膷ki

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    The exciton binding energies in finite-potential quantum dot discs of GaAs are obtained and the eigenstates and the eigenvalues of the exciton are calculated. We present the exciton binding energy for different values of the disc radius (R) and the disc half-width (L/2). The exciton-state stability for large and small sizes of the dot is discussed. We compare our results with the existing theoretical and experimental results. Our results give good estimates for the optimal quantum dot disc geometry, and represent useful data in studies of the optical properties of quantum dots in nano-scale devices.Izra膷unali smo energiju vezanja, svojstvena stanja i svojstvene vrijednosti eksitona u kvantnoj to膷ki s kona膷nim potencijalom. Opisujemo energiju vezanja eksitona za vi拧e vrijednosti polumjera (R) i polu拧irine (L/2) diska. Raspravljamo stabilnost eksitona za male i ve膰e dimenzije diska. Uspore膽ujemo na拧e rezultate s poznatim drugim teorijskim i eksperimentalnim rezultatima. Na拧i rezultati daju dobre ocjene za povoljnu veli膷inu diska kvantne to膷ke, i predstavljaju korisne podatke za prou膷avanje opti膷kih svojstava kvantnih to膷aka u napravama nano veli膷ine

    Application of electric analog simulation to the solution of problems of heat and mass transfer

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