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Shih CY, Huang JZ, Chen MH, Hsu CC, Wu CI, Cheng IC, Chen JZ. The Influence of Helium Dielectric Barrier Discharge Jet (DBDjet) Plasma Treatment on Bathocuproine (BCP) in p-i-n-Structure Perovskite Solar Cells. Polymers (Basel) 2021; 13:4020. [PMID: 34833316 PMCID: PMC8622915 DOI: 10.3390/polym13224020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 01/06/2023] Open
Abstract
A bathocuproine (BCP) layer is typically used as the hole-blocking layer in p-i-n-structure perovskite solar cells (PSCs) between PC61BM and Ag electrodes. Before evaporating the Ag, we used a low-temperature (<40 °C) atmospheric-pressure dielectric barrier discharge jet (DBDjet) to treat the BCP with different scan rates. The main purpose of this was to change the contact resistance between the BCP layer and the Ag electrodes through surface modification using a DBDjet. The best power conversion efficiency (PCE) of 13.11% was achieved at a DBDjet scan rate of 2 cm/s. The He DBDjet treatment introduced nitrogen to form C-N bonds and create pits on the BCP layer. This deteriorated the interface between the BCP and the follow-up deposited-Ag top electrode. Compared to the device without the plasma treatment on the BCP layer, the He DBDjet treatment on the BCP layer reduced photocurrent hysteresis but deteriorated the fill factor and the efficiency of the PSCs.
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Affiliation(s)
- Chung-Yueh Shih
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
| | - Jian-Zhi Huang
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
| | - Mei-Hsin Chen
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei City 10608, Taiwan;
| | - Cheng-Che Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei City 10617, Taiwan;
| | - Chih-I Wu
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
| | - I-Chun Cheng
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei City 10617, Taiwan; (J.-Z.H.); (C.-I.W.); (I.-C.C.)
- Department of Electrical Engineering, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
| | - Jian-Zhang Chen
- Graduate Institute of Applied Mechanics, National Taiwan University, Taipei City 10617, Taiwan;
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei City 10617, Taiwan
- Innovative Photonics Advanced Research Center (i-PARC), National Taiwan University, Taipei City 10617, Taiwan
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