Abstract
The low electron affinity of ZnTe quantum dots (QDs) makes it of interest for critically important photocatalytic processes. However, studies of charge transfer from such materials to adsorbates have not been reported. Here, the ultrafast internal and external charge separation dynamics in ZnTe/CdSe core/shell type II QDs have been studied through femtosecond transient absorption spectroscopy. The internal electron transfer time from a ZnTe core to a CdSe shell was found to be 0.67 ps, while the external electron transfer time from QDs to adsorbed molecules was found to be
| Original language | English |
|---|---|
| Pages (from-to) | 2052-2058 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry Letters |
| Volume | 3 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - Aug 2 2012 |
Fingerprint
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Ultrafast charge separation from highly reductive ZnTe/CdSe type II quantum dots. / Jin, Shengye; Zhang, Jun; Schaller, Richard D; Rajh, Tijana; Wiederrecht, Gary P.
In: Journal of Physical Chemistry Letters, Vol. 3, No. 15, 02.08.2012, p. 2052-2058.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultrafast charge separation from highly reductive ZnTe/CdSe type II quantum dots
AU - Jin, Shengye
AU - Zhang, Jun
AU - Schaller, Richard D
AU - Rajh, Tijana
AU - Wiederrecht, Gary P.
PY - 2012/8/2
Y1 - 2012/8/2
N2 - The low electron affinity of ZnTe quantum dots (QDs) makes it of interest for critically important photocatalytic processes. However, studies of charge transfer from such materials to adsorbates have not been reported. Here, the ultrafast internal and external charge separation dynamics in ZnTe/CdSe core/shell type II QDs have been studied through femtosecond transient absorption spectroscopy. The internal electron transfer time from a ZnTe core to a CdSe shell was found to be 0.67 ps, while the external electron transfer time from QDs to adsorbed molecules was found to be
AB - The low electron affinity of ZnTe quantum dots (QDs) makes it of interest for critically important photocatalytic processes. However, studies of charge transfer from such materials to adsorbates have not been reported. Here, the ultrafast internal and external charge separation dynamics in ZnTe/CdSe core/shell type II QDs have been studied through femtosecond transient absorption spectroscopy. The internal electron transfer time from a ZnTe core to a CdSe shell was found to be 0.67 ps, while the external electron transfer time from QDs to adsorbed molecules was found to be
UR - http://www.scopus.com/inward/record.url?scp=84864780099&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84864780099&partnerID=8YFLogxK
U2 - 10.1021/jz3008886
DO - 10.1021/jz3008886
M3 - Article
AN - SCOPUS:84864780099
VL - 3
SP - 2052
EP - 2058
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
SN - 1948-7185
IS - 15
ER -