Performance enhancement of quantum dot sensitized solar cells under TiO2 nanotube arrays membranes optimization

One-dimensional single crystalline TiO 2 nanotube arrays with different length are prepared, and transferred onto the FTO glass substrate with different concentration of Ti-precursor. The relationships between the concentration of Ti-precursor and the optical properties, as well as the photovoltaic...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Electronic materials letters 2017, 13(4), , pp.359-367
Hauptverfasser: Peng, Zhuoyin, Liu, Yueli, Zhao, Yinghan, Liao, Lida, Chen, Jian
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:One-dimensional single crystalline TiO 2 nanotube arrays with different length are prepared, and transferred onto the FTO glass substrate with different concentration of Ti-precursor. The relationships between the concentration of Ti-precursor and the optical properties, as well as the photovoltaic performance of the as-prepared solar cells have been investigated. The optical absorption intensity is obviously enhanced and optical absorption edge is expanded to 800 nm for the CdSe/CdS/TiO 2 NTs solar cells. In addition, 20 μm - CdSe/CdS/TiO 2 NTs solar cells with 0.1 M Ti-precursor have the great photovoltaic conversion efficiency of 4.18%. The excellent photovoltaic performance is attributed to the suitable TiO 2 connection layer from 0.1 M Ti-precursor and length of TiO 2 NTs, which greatly enhances the electron-hole generation and charge transfer performance in the solar cells. Finally, the photovoltaic efficiency of the as-fabricated solar cells can be further enhanced to 4.51% through the ZnS passivation layer deposition.
ISSN:1738-8090
2093-6788
DOI:10.1007/s13391-017-6219-1