Improved Electrical Performance of Perovskite Photovoltaic Mini-Modules through Controlled PbI2 Formation Using Nanosecond Laser Pulses for P3 Patterning
(2021) In Energy Technology 9(4).- Abstract
The upscaling of perovskite solar cells to modules requires the patterning of the layer stack in individual cells that are monolithically interconnected in series. This interconnection scheme is composed of three lines, P1–P3, which are scribed using a pulsed laser beam. The P3 scribe is intended to isolate the back contact layer of neighboring cells, but is often affected by undesired effects such as back contact delamination, flaking, and poor electrical isolation. Herein, the influence of the laser pulse duration on the electrical and compositional properties of P3 scribe lines is investigated. The results show that both nanosecond and picosecond laser pulses are suitable for P3 patterning, with the nanosecond pulses leading to a... (More)
The upscaling of perovskite solar cells to modules requires the patterning of the layer stack in individual cells that are monolithically interconnected in series. This interconnection scheme is composed of three lines, P1–P3, which are scribed using a pulsed laser beam. The P3 scribe is intended to isolate the back contact layer of neighboring cells, but is often affected by undesired effects such as back contact delamination, flaking, and poor electrical isolation. Herein, the influence of the laser pulse duration on the electrical and compositional properties of P3 scribe lines is investigated. The results show that both nanosecond and picosecond laser pulses are suitable for P3 patterning, with the nanosecond pulses leading to a higher open circuit voltage, a higher fill factor, and a higher power conversion efficiency. It is found that the longer pulse duration resultes in a larger amount of PbI2 formed within the P3 line and a thin Br-rich interfacial layer which both effectively passivate defects at the scribe line edges and block charge carrier in its vicinity. Thus, nanosecond laser pulses are preferable for P3 patterning as they promote the formation of beneficial chemical phases, resulting in an improved photovoltaic performance.
(Less)
- author
- organization
- publishing date
- 2021-04
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ablation, laser, perovskites, photovoltaics, series interconnections, solar modules, thin films
- in
- Energy Technology
- volume
- 9
- issue
- 4
- article number
- 2000969
- pages
- 8 pages
- publisher
- Wiley
- external identifiers
-
- scopus:85101553769
- ISSN
- 2194-4288
- DOI
- 10.1002/ente.202000969
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: M.F., C.S., J.D., and F.U.K. contributed equally to this work. The authors M.F., J.D., and E.U. gratefully acknowledge funding from the German Ministry of Education and Research (BMBF) for the Young Investigator Group Hybrid Materials Formation and Scaling (HyPerFORME) within the program “NanoMatFutur” (grant no. 03XP0091) and the “SNaPSHoTs” project (grant no. 01IO1806). F.U.K. thanks the Jardine Foundation and Cambridge Trust for a doctoral scholarship. The research leading to these results has received funding from the European Union Horizon 2020 research and innovation program under grant agreement No. 823717 – ESTEEM3. Moreover, the authors acknowledge the support of the PVcomB and the HZB (EE‐IS) team, especially Carola Klimm for SEM measurements (Figure 3a,b). Publisher Copyright: © 2021 Wiley-VCH GmbH Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
- id
- 453ae988-daec-4837-b57e-b0acbf7bc637
- date added to LUP
- 2021-04-28 14:17:03
- date last changed
- 2023-11-08 13:37:18
@article{453ae988-daec-4837-b57e-b0acbf7bc637,
abstract = {{<p>The upscaling of perovskite solar cells to modules requires the patterning of the layer stack in individual cells that are monolithically interconnected in series. This interconnection scheme is composed of three lines, P1–P3, which are scribed using a pulsed laser beam. The P3 scribe is intended to isolate the back contact layer of neighboring cells, but is often affected by undesired effects such as back contact delamination, flaking, and poor electrical isolation. Herein, the influence of the laser pulse duration on the electrical and compositional properties of P3 scribe lines is investigated. The results show that both nanosecond and picosecond laser pulses are suitable for P3 patterning, with the nanosecond pulses leading to a higher open circuit voltage, a higher fill factor, and a higher power conversion efficiency. It is found that the longer pulse duration resultes in a larger amount of PbI<sub>2</sub> formed within the P3 line and a thin Br-rich interfacial layer which both effectively passivate defects at the scribe line edges and block charge carrier in its vicinity. Thus, nanosecond laser pulses are preferable for P3 patterning as they promote the formation of beneficial chemical phases, resulting in an improved photovoltaic performance.</p>}},
author = {{Fenske, Markus and Schultz, Christof and Dagar, Janardan and Kosasih, Felix Utama and Zeiser, Andreas and Junghans, Cornelia and Bartelt, Andreas and Ducati, Caterina and Schlatmann, Rutger and Unger, Eva and Stegemann, Bert}},
issn = {{2194-4288}},
keywords = {{ablation; laser; perovskites; photovoltaics; series interconnections; solar modules; thin films}},
language = {{eng}},
number = {{4}},
publisher = {{Wiley}},
series = {{Energy Technology}},
title = {{Improved Electrical Performance of Perovskite Photovoltaic Mini-Modules through Controlled PbI<sub>2</sub> Formation Using Nanosecond Laser Pulses for P3 Patterning}},
url = {{http://dx.doi.org/10.1002/ente.202000969}},
doi = {{10.1002/ente.202000969}},
volume = {{9}},
year = {{2021}},
}