Characterization of the Laser Scribing Process of HIT Cells for a Photovoltaic Shingled Module

Shingled string technology can be used to maximize the output power of photovoltaic modules. The maximum power (P max ) of a shingled photovoltaic module can be increased by using a bifacial heterojunction with an intrinsic thin layer (HIT) of cells. To fabricate the shingled strings for a high powe...

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Bibliographic Details
Published in:Journal of the Korean Physical Society 2020, 77(11), , pp.971-974
Main Authors: Jee, Hongsub, Lee, Jaehyeong, Moon, Daehan, Park, Min-Joon, Jeong, Taewung, Jeong, Hyoungjin, Jeong, Chaehwan
Format: Article
Language:English
Subjects:
Mathematical and Computational Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Theoretical
물리학
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Summary:Shingled string technology can be used to maximize the output power of photovoltaic modules. The maximum power (P max ) of a shingled photovoltaic module can be increased by using a bifacial heterojunction with an intrinsic thin layer (HIT) of cells. To fabricate the shingled strings for a high power module, we first cut 6-inch solar cells by laser scribing while minimizing cutting loss. Unlike standard crystalline silicon (c-Si) solar cells, the structure of bifacial HIT solar cells is weak under thermal effect, so an optimal scribing condition had to be found. After laser scribing processes had been optimized, P max was increased by 0.02W for each separated solar cells when we using an ultraviolet (UV) laser compared to the green laser, and a UV cut shingled string of HIT cell was demonstrated for the first time.
ISSN:0374-4884
1976-8524
DOI:10.3938/jkps.77.971