Transition from photoconductivity to photovoltaic effect in P3HT/CuInSe 2 Composites

Yang Yang; Haizheng Zhong; Zelong Bai; Bingsuo Zou; Yongfang Li; Gregory D. Scholes

doi:10.1021/jp300973c

Transition from photoconductivity to photovoltaic effect in P3HT/CuInSe ₂ Composites

Yang Yang, Haizheng Zhong, Zelong Bai, Bingsuo Zou, Yongfang Li, Gregory D. Scholes

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

44 Scopus citations

Abstract

We report the investigation of composites of poly-(3-hexylthiophene) (P3HT) and CuInSe ₂ nanocrystals (NCs). CuInSe ₂ NCs were synthesized at gram scale through a colloidal route. Cyclic voltammetry was used to determine the HOMO-LUMO energy levels, as well as the energies of trap states intrinsic to CuInSe ₂ NCs. The results suggest that nanocrystal-polymer charge transfer is foreseeable in the P3HT and CuInSe ₂ system because of their type II band alignment. We studied optical properties of the hybrid composite films of P3HT and CuInSe ₂ NCs as a function of P3HT/CuInSe ₂ NCs weight ratios. The quenching of photoluminescence spectra with the increase of CuInSe ₂ ratio in the composite was interpreted to result from charge transfer between the polymer and CuInSe ₂ NCs. We further studied photodiode devices that exhibited a transition from photoconductive gain to the photovoltaic effect with an increase of the P3HT/CuInSe ₂ weight ratio. Performance of the photovoltaic devices was strongly limited by intrinsic traps associated with the CuInSe ₂ NCs.

Original language	English (US)
Pages (from-to)	7280-7286
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	116
Issue number	13
DOIs	https://doi.org/10.1021/jp300973c
State	Published - Apr 5 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

Access to Document

10.1021/jp300973c

Cite this

@article{22d8197be4654be0a0c5af86a89740d3,

title = "Transition from photoconductivity to photovoltaic effect in P3HT/CuInSe 2 Composites",

abstract = "We report the investigation of composites of poly-(3-hexylthiophene) (P3HT) and CuInSe 2 nanocrystals (NCs). CuInSe 2 NCs were synthesized at gram scale through a colloidal route. Cyclic voltammetry was used to determine the HOMO-LUMO energy levels, as well as the energies of trap states intrinsic to CuInSe 2 NCs. The results suggest that nanocrystal-polymer charge transfer is foreseeable in the P3HT and CuInSe 2 system because of their type II band alignment. We studied optical properties of the hybrid composite films of P3HT and CuInSe 2 NCs as a function of P3HT/CuInSe 2 NCs weight ratios. The quenching of photoluminescence spectra with the increase of CuInSe 2 ratio in the composite was interpreted to result from charge transfer between the polymer and CuInSe 2 NCs. We further studied photodiode devices that exhibited a transition from photoconductive gain to the photovoltaic effect with an increase of the P3HT/CuInSe 2 weight ratio. Performance of the photovoltaic devices was strongly limited by intrinsic traps associated with the CuInSe 2 NCs.",

author = "Yang Yang and Haizheng Zhong and Zelong Bai and Bingsuo Zou and Yongfang Li and Scholes, \{Gregory D.\}",

year = "2012",

month = apr,

day = "5",

doi = "10.1021/jp300973c",

language = "English (US)",

volume = "116",

pages = "7280--7286",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "13",

}

TY - JOUR

T1 - Transition from photoconductivity to photovoltaic effect in P3HT/CuInSe 2 Composites

AU - Yang, Yang

AU - Zhong, Haizheng

AU - Bai, Zelong

AU - Zou, Bingsuo

AU - Li, Yongfang

AU - Scholes, Gregory D.

PY - 2012/4/5

Y1 - 2012/4/5

N2 - We report the investigation of composites of poly-(3-hexylthiophene) (P3HT) and CuInSe 2 nanocrystals (NCs). CuInSe 2 NCs were synthesized at gram scale through a colloidal route. Cyclic voltammetry was used to determine the HOMO-LUMO energy levels, as well as the energies of trap states intrinsic to CuInSe 2 NCs. The results suggest that nanocrystal-polymer charge transfer is foreseeable in the P3HT and CuInSe 2 system because of their type II band alignment. We studied optical properties of the hybrid composite films of P3HT and CuInSe 2 NCs as a function of P3HT/CuInSe 2 NCs weight ratios. The quenching of photoluminescence spectra with the increase of CuInSe 2 ratio in the composite was interpreted to result from charge transfer between the polymer and CuInSe 2 NCs. We further studied photodiode devices that exhibited a transition from photoconductive gain to the photovoltaic effect with an increase of the P3HT/CuInSe 2 weight ratio. Performance of the photovoltaic devices was strongly limited by intrinsic traps associated with the CuInSe 2 NCs.

AB - We report the investigation of composites of poly-(3-hexylthiophene) (P3HT) and CuInSe 2 nanocrystals (NCs). CuInSe 2 NCs were synthesized at gram scale through a colloidal route. Cyclic voltammetry was used to determine the HOMO-LUMO energy levels, as well as the energies of trap states intrinsic to CuInSe 2 NCs. The results suggest that nanocrystal-polymer charge transfer is foreseeable in the P3HT and CuInSe 2 system because of their type II band alignment. We studied optical properties of the hybrid composite films of P3HT and CuInSe 2 NCs as a function of P3HT/CuInSe 2 NCs weight ratios. The quenching of photoluminescence spectra with the increase of CuInSe 2 ratio in the composite was interpreted to result from charge transfer between the polymer and CuInSe 2 NCs. We further studied photodiode devices that exhibited a transition from photoconductive gain to the photovoltaic effect with an increase of the P3HT/CuInSe 2 weight ratio. Performance of the photovoltaic devices was strongly limited by intrinsic traps associated with the CuInSe 2 NCs.

UR - https://www.scopus.com/pages/publications/84859609426

UR - https://www.scopus.com/inward/citedby.url?scp=84859609426&partnerID=8YFLogxK

U2 - 10.1021/jp300973c

DO - 10.1021/jp300973c

M3 - Article

AN - SCOPUS:84859609426

SN - 1932-7447

VL - 116

SP - 7280

EP - 7286

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 13

ER -

Transition from photoconductivity to photovoltaic effect in P3HT/CuInSe ₂ Composites

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this