Free charges produced by carrier multiplication in strongly coupled pbse quantum dot films

Michiel Aerts; C. S. Suchand Sandeep; Yunan Gao; Tom J. Savenije; Juleon M. Schins; Arjan J. Houtepen; Sachin Kinge; Laurens D.A. Siebbeles

doi:10.1021/nl202915p

Free charges produced by carrier multiplication in strongly coupled pbse quantum dot films

Michiel Aerts^*
, C. S. Suchand Sandeep
, Yunan Gao
, Tom J. Savenije
, Juleon M. Schins
, Arjan J. Houtepen
, Sachin Kinge
, Laurens D.A. Siebbeles

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

We show that in films of strongly coupled PbSe quantum dots multiple electron-hole pairs can be efficiently produced by absorption of a single photon (carrier multiplication). Moreover, in these films carrier multiplication leads to the generation of free, highly mobile charge carriers rather than excitons. Using the time-resolved microwave conductivity technique, we observed the production of more than three electron-hole pairs upon absorption of a single highly energetic photon (5.7E_g). Free charge carriers produced via carrier multiplication are readily available for use in optoelectronic devices even without employing any complex donor/acceptor architecture or electric fields.

Original language	English
Pages (from-to)	4485-4489
Number of pages	5
Journal	Nano Letters
Volume	11
Issue number	10
DOIs	https://doi.org/10.1021/nl202915p
Publication status	Published - 12-10-2011

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

Access to Document

10.1021/nl202915p

Cite this

@article{aef2950794c24cd3869e6d76a6b418f3,

title = "Free charges produced by carrier multiplication in strongly coupled pbse quantum dot films",

abstract = "We show that in films of strongly coupled PbSe quantum dots multiple electron-hole pairs can be efficiently produced by absorption of a single photon (carrier multiplication). Moreover, in these films carrier multiplication leads to the generation of free, highly mobile charge carriers rather than excitons. Using the time-resolved microwave conductivity technique, we observed the production of more than three electron-hole pairs upon absorption of a single highly energetic photon (5.7Eg). Free charge carriers produced via carrier multiplication are readily available for use in optoelectronic devices even without employing any complex donor/acceptor architecture or electric fields.",

author = "Michiel Aerts and \{Suchand Sandeep\}, \{C. S.\} and Yunan Gao and Savenije, \{Tom J.\} and Schins, \{Juleon M.\} and Houtepen, \{Arjan J.\} and Sachin Kinge and Siebbeles, \{Laurens D.A.\}",

year = "2011",

month = oct,

day = "12",

doi = "10.1021/nl202915p",

language = "English",

volume = "11",

pages = "4485--4489",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - Free charges produced by carrier multiplication in strongly coupled pbse quantum dot films

AU - Aerts, Michiel

AU - Suchand Sandeep, C. S.

AU - Gao, Yunan

AU - Savenije, Tom J.

AU - Schins, Juleon M.

AU - Houtepen, Arjan J.

AU - Kinge, Sachin

AU - Siebbeles, Laurens D.A.

PY - 2011/10/12

Y1 - 2011/10/12

N2 - We show that in films of strongly coupled PbSe quantum dots multiple electron-hole pairs can be efficiently produced by absorption of a single photon (carrier multiplication). Moreover, in these films carrier multiplication leads to the generation of free, highly mobile charge carriers rather than excitons. Using the time-resolved microwave conductivity technique, we observed the production of more than three electron-hole pairs upon absorption of a single highly energetic photon (5.7Eg). Free charge carriers produced via carrier multiplication are readily available for use in optoelectronic devices even without employing any complex donor/acceptor architecture or electric fields.

AB - We show that in films of strongly coupled PbSe quantum dots multiple electron-hole pairs can be efficiently produced by absorption of a single photon (carrier multiplication). Moreover, in these films carrier multiplication leads to the generation of free, highly mobile charge carriers rather than excitons. Using the time-resolved microwave conductivity technique, we observed the production of more than three electron-hole pairs upon absorption of a single highly energetic photon (5.7Eg). Free charge carriers produced via carrier multiplication are readily available for use in optoelectronic devices even without employing any complex donor/acceptor architecture or electric fields.

UR - https://www.scopus.com/pages/publications/80054026716

UR - https://www.scopus.com/pages/publications/80054026716#tab=citedBy

U2 - 10.1021/nl202915p

DO - 10.1021/nl202915p

M3 - Article

AN - SCOPUS:80054026716

SN - 1530-6984

VL - 11

SP - 4485

EP - 4489

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

Free charges produced by carrier multiplication in strongly coupled pbse quantum dot films

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this