Quantum dot PbS sub(0.9)Se sub(0.1)/TiO sub(2) heterojunction solar cells

Quantum dot PbS sub(0.9)Se sub(0.1)/TiO sub(2) heterojunction solar cells

We report on photovoltaic cells based on ternary PbS sub(0.9)Se sub(0.1) quantum dots utilizing a heterojunction type device configuration. The best device shows an AM 1.5 power conversion efficiency of 4.25%. Furthermore, this ternary PbS sub(x)Se sub(1-x) quantum dot heterojunction device has a pe...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nanotechnology 2012-10, Vol.23 (40), p.405401-1-7
Hauptverfasser: Zhai, G, Church, C P, Breeze, A J, Zhang, D, Alers, G B, Carter, SA
Format: Artikel
Sprache:eng
Schlagworte:
Binary systems
Devices
Heterojunction devices
Heterojunctions
Photovoltaic cells
Quantum dots
Solar cells
Titanium dioxide
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We report on photovoltaic cells based on ternary PbS sub(0.9)Se sub(0.1) quantum dots utilizing a heterojunction type device configuration. The best device shows an AM 1.5 power conversion efficiency of 4.25%. Furthermore, this ternary PbS sub(x)Se sub(1-x) quantum dot heterojunction device has a peak external quantum efficiency above 100% at 2.76 eV, approximately 2.7 x the bandgap energy. The ternary quantum dots combine the higher short circuit currents of the binary PbSe system with the higher open circuit voltages of the binary PbS system.
ISSN:0957-4484
DOI:10.1088/0957-4484/23/40/405401