Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods

Weining Luo; Tonggang Jiu; Chaoyang Kuang; Bairu Li; Fushen Lu; Junfeng Fang

doi:10.1007/s12274-015-0810-2

Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods

Weining Luo
, Tonggang Jiu^*
, Chaoyang Kuang
, Bairu Li
, Fushen Lu
, Junfeng Fang

^*Corresponding author for this work

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

5 Scopus citations

Abstract

We report the fabrication of polymer/inorganic hybrid solar cells (HSCs) based on CdSe nanorods (NRs) and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol (EDT) and 1,4-benzenedithiol (1,4-BDT) treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device (1.75%). This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance. [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	3045-3053
Number of pages	9
Journal	Nano Research
Volume	8
Issue number	9
DOIs	https://doi.org/10.1007/s12274-015-0810-2
State	Published - 15 Sep 2015
Externally published	Yes

Keywords

1,4-BDT treatments
CdSe nanorods
PTB7
ethanedithiol treatments
hybrid solar cells

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10.1007/s12274-015-0810-2

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@article{8b0e66f8c3a24b5fb3e8d84b2c3f76ab,

title = "Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods",

abstract = "We report the fabrication of polymer/inorganic hybrid solar cells (HSCs) based on CdSe nanorods (NRs) and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol (EDT) and 1,4-benzenedithiol (1,4-BDT) treatments and reached 2.58\% and 2.79\%, respectively. These results were preferable to that of a pyridine-coated NR-based device (1.75\%). This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance. [Figure not available: see fulltext.]",

keywords = "1,4-BDT treatments, CdSe nanorods, PTB7, ethanedithiol treatments, hybrid solar cells",

author = "Weining Luo and Tonggang Jiu and Chaoyang Kuang and Bairu Li and Fushen Lu and Junfeng Fang",

note = "Publisher Copyright: {\textcopyright} 2015, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.",

year = "2015",

month = sep,

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doi = "10.1007/s12274-015-0810-2",

language = "英语",

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TY - JOUR

T1 - Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods

AU - Luo, Weining

AU - Jiu, Tonggang

AU - Kuang, Chaoyang

AU - Li, Bairu

AU - Lu, Fushen

AU - Fang, Junfeng

PY - 2015/9/15

Y1 - 2015/9/15

N2 - We report the fabrication of polymer/inorganic hybrid solar cells (HSCs) based on CdSe nanorods (NRs) and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol (EDT) and 1,4-benzenedithiol (1,4-BDT) treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device (1.75%). This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance. [Figure not available: see fulltext.]

AB - We report the fabrication of polymer/inorganic hybrid solar cells (HSCs) based on CdSe nanorods (NRs) and the semiconducting polymer PTB7. The power conversion efficiency of HSCs can be significantly enhanced by engineering the polymer/nanocrystal interface with ethanedithiol (EDT) and 1,4-benzenedithiol (1,4-BDT) treatments and reached 2.58% and 2.79%, respectively. These results were preferable to that of a pyridine-coated NR-based device (1.75%). This improvement was attributed to the thiol groups of EDT and 1,4-BDT, which can tightly coordinate the Cd ions to form Cd-thialate on CdSe NR surfaces, thereby effectively passivating the NR surface and reducing the active layer defects. Therefore, the rate of exciton generation and dissociation was enhanced and led to the improvement of the device performance. [Figure not available: see fulltext.]

KW - 1,4-BDT treatments

KW - CdSe nanorods

KW - PTB7

KW - ethanedithiol treatments

KW - hybrid solar cells

UR - https://www.scopus.com/pages/publications/84941738871

U2 - 10.1007/s12274-015-0810-2

DO - 10.1007/s12274-015-0810-2

M3 - 文章

AN - SCOPUS:84941738871

SN - 1998-0124

VL - 8

SP - 3045

EP - 3053

JO - Nano Research

JF - Nano Research

IS - 9

ER -

Dithiol treatments enhancing the efficiency of hybrid solar cells based on PTB7 and CdSe nanorods

Abstract

Keywords

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