Effects of nanocrystal size and device aging on performance of hybrid poly(3-hexylthiophene):CdSe nanocrystal solar cells

Jihua Yang; Aiwei Tang; Renjia Zhou; Jiangeng Xue

doi:10.1016/j.solmat.2010.09.005

Effects of nanocrystal size and device aging on performance of hybrid poly(3-hexylthiophene):CdSe nanocrystal solar cells

Jihua Yang, Aiwei Tang, Renjia Zhou, Jiangeng Xue

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

87 Scopus citations

Abstract

We have studied hybrid solar cells based on the polymer poly(3-hexylthiophene) (P3HT) and colloidal CdSe nanocrystals. Using CdSe nanospheres with varying size, we have found that the power conversion efficiency (η_P) of these devices increases monotonically with the CdSe nanocrystal size, from η_P=(0.39±0.04)% under AM1.5G solar illumination for 4.0±0.2 nm size nanospheres to η_P=(1.9±0.2)% for 6.8±0.5 nm size nanospheres. The efficiency increase with nanocrystal size is mostly due to a significant increase in the short-circuit current, whereas the open-circuit voltage and fill factor of the solar cells are less affected. The devices also exhibit abnormal initial aging behavior when exposed to air, as an increase in both the short-circuit current and open-circuit voltage during the first 30 min leads to a significant increase in η_P.

Original language	English (US)
Pages (from-to)	476-482
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	95
Issue number	2
DOIs	https://doi.org/10.1016/j.solmat.2010.09.005
State	Published - Feb 2011
Externally published	Yes

Bibliographical note

Funding Information:
We gratefully acknowledge financial support from the Solar Energy Technology Program of the U.S. Department of Energy and the CAREER Program of the National Science Foundation . Aiwei Tang is also grateful to China Scholarship Council for financial support.

Keywords

Colloidal nanocrystals
Conjugated polymers
Device aging
Hybrid solar cells
Organic solar cells
Size effect

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2010.09.005

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title = "Effects of nanocrystal size and device aging on performance of hybrid poly(3-hexylthiophene):CdSe nanocrystal solar cells",

abstract = "We have studied hybrid solar cells based on the polymer poly(3-hexylthiophene) (P3HT) and colloidal CdSe nanocrystals. Using CdSe nanospheres with varying size, we have found that the power conversion efficiency (ηP) of these devices increases monotonically with the CdSe nanocrystal size, from ηP=(0.39±0.04)% under AM1.5G solar illumination for 4.0±0.2 nm size nanospheres to ηP=(1.9±0.2)% for 6.8±0.5 nm size nanospheres. The efficiency increase with nanocrystal size is mostly due to a significant increase in the short-circuit current, whereas the open-circuit voltage and fill factor of the solar cells are less affected. The devices also exhibit abnormal initial aging behavior when exposed to air, as an increase in both the short-circuit current and open-circuit voltage during the first 30 min leads to a significant increase in ηP.",

keywords = "Colloidal nanocrystals, Conjugated polymers, Device aging, Hybrid solar cells, Organic solar cells, Size effect",

author = "Jihua Yang and Aiwei Tang and Renjia Zhou and Jiangeng Xue",

note = "Funding Information: We gratefully acknowledge financial support from the Solar Energy Technology Program of the U.S. Department of Energy and the CAREER Program of the National Science Foundation . Aiwei Tang is also grateful to China Scholarship Council for financial support. ",

year = "2011",

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doi = "10.1016/j.solmat.2010.09.005",

language = "English (US)",

volume = "95",

pages = "476--482",

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AU - Yang, Jihua

AU - Tang, Aiwei

AU - Zhou, Renjia

AU - Xue, Jiangeng

N1 - Funding Information: We gratefully acknowledge financial support from the Solar Energy Technology Program of the U.S. Department of Energy and the CAREER Program of the National Science Foundation . Aiwei Tang is also grateful to China Scholarship Council for financial support.

PY - 2011/2

Y1 - 2011/2

N2 - We have studied hybrid solar cells based on the polymer poly(3-hexylthiophene) (P3HT) and colloidal CdSe nanocrystals. Using CdSe nanospheres with varying size, we have found that the power conversion efficiency (ηP) of these devices increases monotonically with the CdSe nanocrystal size, from ηP=(0.39±0.04)% under AM1.5G solar illumination for 4.0±0.2 nm size nanospheres to ηP=(1.9±0.2)% for 6.8±0.5 nm size nanospheres. The efficiency increase with nanocrystal size is mostly due to a significant increase in the short-circuit current, whereas the open-circuit voltage and fill factor of the solar cells are less affected. The devices also exhibit abnormal initial aging behavior when exposed to air, as an increase in both the short-circuit current and open-circuit voltage during the first 30 min leads to a significant increase in ηP.

AB - We have studied hybrid solar cells based on the polymer poly(3-hexylthiophene) (P3HT) and colloidal CdSe nanocrystals. Using CdSe nanospheres with varying size, we have found that the power conversion efficiency (ηP) of these devices increases monotonically with the CdSe nanocrystal size, from ηP=(0.39±0.04)% under AM1.5G solar illumination for 4.0±0.2 nm size nanospheres to ηP=(1.9±0.2)% for 6.8±0.5 nm size nanospheres. The efficiency increase with nanocrystal size is mostly due to a significant increase in the short-circuit current, whereas the open-circuit voltage and fill factor of the solar cells are less affected. The devices also exhibit abnormal initial aging behavior when exposed to air, as an increase in both the short-circuit current and open-circuit voltage during the first 30 min leads to a significant increase in ηP.

KW - Colloidal nanocrystals

KW - Conjugated polymers

KW - Device aging

KW - Hybrid solar cells

KW - Organic solar cells

KW - Size effect

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Effects of nanocrystal size and device aging on performance of hybrid poly(3-hexylthiophene):CdSe nanocrystal solar cells

Abstract

Bibliographical note

Keywords

UN SDGs

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