Performance characterization and remedy of experimental CuInGaSe2 mini-modules : preprint / F.J. Pern [and others].

Format:

Book

Government document

Contributor:

Pern, F. J. (Fu-Jann), 1952-

National Renewable Energy Laboratory (U.S.)

Series:

Conference paper (National Renewable Energy Laboratory (U.S.)) ; 5200-51812.

NREL/CP ; 5200-51812

Language:

English

Subjects (All):

Photovoltaic cells--Research.

Photovoltaic cells.

Solar cells--Research.

Solar cells.

Physical Description:

1 online resource (6 pages) : illustrations.

Place of Publication:

Golden, CO : National Renewable Energy Laboratory, [2011]

Summary:

We employed current-voltage (I-V), quantum efficiency (QE), photoluminescence (PL), electroluminescence (EL), lock-in thermography (LIT), and (electrochemical) impedance spectroscopy (ECIS) to complementarily characterize the performance and remedy for two pairs of experimental CuInGaSe2 (CIGS) mini-modules. One pair had the three scribe-lines (P1/P2/P3) done by a single pulse-programmable laser, and the other had the P2/P3 lines by mechanical scribe. Localized QE measurements for each cell strip on all four mini-modules showed non-uniform distributions that correlated well with the presence of performance-degrading strips or spots revealed by PL, EL, and LIT imaging. Performance of the all-laser-scribed mini-modules improved significantly by adding a thicker Al-doped ZnO layer and reworking the P3 line. The efficiency on one of the all-laser-scribed mini-modules increased notably from 7.80% to 8.56% after the performance-degrading spots on the side regions along the cell array were isolated by manual scribes.

Notes:

Title from title screen (viewed September 2, 2011).

"July 2011."

"Conference paper."

"Presented at the 37th IEEE Photovoltaic Specialists Conference (PVSC 37), Seattle, Washington, June 19-24, 2011."

Includes bibliographical references (pages 5-6).

"Contract no. DE-AC36-08GO28308."

OCLC:

748820168