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Effect of Metal Electrodes on Aging-Induced Performance Recovery in Perovskite Solar Cells
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- Lee, Dong Geon (author)
- Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea
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- Kim, Min-cheol (author)
- Univ Calif San Diego, Dept NanoEngn, 9500 Gilman Dr, La Jolla, CA 92093 USA
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- Wang, Shen (author)
- Univ Calif San Diego, Dept NanoEngn, 9500 Gilman Dr, La Jolla, CA 92093 USA
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- 2019-12-04
- 2019
- English.
- In: ACS Applied Materials and Interfaces. - : AMER CHEMICAL SOC. - 1944-8244 .- 1944-8252. ; 11:51, s. 48497-48504
- Journal article (peer-reviewed)
Abstract
Subject headings
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- For commercialization of perovskite solar cells (PSCs), it is important to substitute the alternative electrode for Au to decrease the unit cost. From the early stage, Ag exhibits a potential to be a good counter electrode in PSCs; however, there is an abnormal s-shaped J-V curve with the Ag electrode, and it is recovered as time passes. The perception of the aging-induced recovery process and refutation of the raised stability issues are required for commercial application of Ag electrodes. Herein, we compared the aging effect of PSCs with Ag and Au electrodes and found that only devices with Ag electrodes have a dramatical aging-induced recovery process. We observed the change of photoelectronic properties only in the devices with Ag electrodes as time passes, which mainly contributes to recovery of the s-shaped J-V curve. We verified the work function change of an aged Ag electrode and its mechanism by photoelectron spectroscopy analysis. By comparing the light stability under 1 sun intensity illumination, we can assure the practical stability of Ag electrodes in case of being encapsulated. This work suggests the profound understanding of the aging-induced recovery process of PSCs and the possibility of commercial application of Ag electrodes.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- perovskite solar cells
- hole injection
- work function
- interfacial reaction
- metal electrodes
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Lee, Dong Geon
- Kim, Min-cheol
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- Uppsala University
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