| Description |
1 online resource (10 p.) : ill. |
| Series |
NREL/CP ; 5200-49411 |
|
Conference paper (National Renewable Energy Laboratory (U.S.)) ; NREL/CP-5200-49411.
|
| System Details |
Full text available via Internet in .pdf format. Adobe Acrobat Reader required. |
| Note |
Title from title screen (NREL, viewed Dec. 6, 2010). |
|
"October 2010." |
|
"Presented at the 25th European PVSEC/WCPEC-5, Valencia, Spain, September 6-10, 2010." |
| Summary |
We describe a novel set of laser processes for the CIGS P1, P2 and P3 scribing steps, the development of which has been enabled by a unique pulse-programmable fiber laser. We find that the unique pulse control properties of this 1064 nm wavelength laser have significant effects on the material removal dynamics of the various film layers in the CIGS material system. In the case of the P2 and P3 processes, the shaped pulses create new laser/material interaction effects that permit the material to be cleanly and precisely removed with zero Heat Affected Zone (HAZ) at the edges of the scribe. The new P2 and P3 processes we describe demonstrate the first use of infrared nanosecond laser pulses that eliminate the HAZ and the consequent localized compositional changes in the CIGS absorber material that result in poor shunt resistance. SEM micrographs and EDX compositional scans are presented. For the P1 scribe, we process the bi-layer molybdenum from the film side as well as through the glass substrate. Microscopic inspection and compositional analysis of the scribe lines are not sufficient to determine electrical and optical performance in working PV modules. Therefore, to demonstrate the applicability of the infrared pulse-programmable laser to all three scribing processes for thin-film CIGS, we fabricate smallsize multiple-cell monolithically interconnected mini-modules in partnership with the National Renewable Energy Laboratory (Golden, Colorado). |
| Bibliography |
Includes bibliographical references. |
| Funding |
DE-AC36-08GO28308. PVA9.2340 |
| Subject |
Photovoltaic cells -- Research -- Congresses.
|
|
Lasers -- Congresses.
|
|
Solar cells -- Congresses.
|
|
Thin films -- Congresses.
|
| Added Author |
Rekow, Mathew.
|
|
PyroPhotonics Lasers, Inc.
|
|
National Renewable Energy Laboratory (U.S.)
|
|
E.C. Photovoltaic Solar Energy Conference.
|
| Added Title |
Copper indium gallium diselenide P1, P2, P3 scribing processes using a pulse programmable industrial fiber laser |
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP-5200-49411 |
|
