Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells

Chen, Lijia; Cai, Lun; Niu, Lianbin; Guo, Pan; Song, Qunliang

doi:10.3390/mi12111295

Open AccessArticle

Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells

by

Lijia Chen

^1,†,

Lun Cai

^2,†,

Lianbin Niu

¹,

Pan Guo

¹ and

Qunliang Song

^3,*

¹

College of Physics and Electronics Engineering, Chongqing Normal University, Chongqing 401331, China

²

School of Materials, Sun Yat-sen University, Shenzhen 518107, China

³

Institute for Clean Energy and Advanced Materials, School of Materials and Energy, Southwest University, Chongqing 400715, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Micromachines 2021, 12(11), 1295; https://doi.org/10.3390/mi12111295

Submission received: 22 September 2021 / Revised: 15 October 2021 / Accepted: 19 October 2021 / Published: 22 October 2021

(This article belongs to the Special Issue Advanced Energy Conversion and Storage Microdevices)

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Abstract

Although the effect of high temperature on the performance of organic solar cells has been widely investigated, it is inevitably influenced by the associated annealing effect (which usually leads to film morphology change and variation in electrical properties), which makes the discussion more sophisticated. In this study, we simplified the issue and investigated the influence of low temperatures (from room temperature to 77 K) on the photocurrent and internal/external quantum efficiency of a CuPc/C60 based solar cell. We found that besides the charge dynamic process (charge transport), one or more of the exciton dynamic processes, such as exciton diffusion and exciton dissociation, also play a significant role in affecting the photocurrent of organic solar cells at different temperatures. Additionally, the results showed that the temperature had negligible influence on the absorption of the CuPc film as well as the exciton generation process, but obviously influenced the other two exciton dynamic processes (exciton diffusion and exciton dissociation).

Keywords: copper phthalocyanine; low temperature; absorption; exciton; organic solar cell

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MDPI and ACS Style

Chen, L.; Cai, L.; Niu, L.; Guo, P.; Song, Q. Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells. Micromachines 2021, 12, 1295. https://doi.org/10.3390/mi12111295

AMA Style

Chen L, Cai L, Niu L, Guo P, Song Q. Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells. Micromachines. 2021; 12(11):1295. https://doi.org/10.3390/mi12111295

Chicago/Turabian Style

Chen, Lijia, Lun Cai, Lianbin Niu, Pan Guo, and Qunliang Song. 2021. "Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells" Micromachines 12, no. 11: 1295. https://doi.org/10.3390/mi12111295

APA Style

Chen, L., Cai, L., Niu, L., Guo, P., & Song, Q. (2021). Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells. Micromachines, 12(11), 1295. https://doi.org/10.3390/mi12111295

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Influence of Temperature on Exciton Dynamic Processes in CuPc/C60 Based Solar Cells

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