Second controlled light-soaking experiment for amorphous silicon modules

Luft, W.; Roedern, B. von; Stafford, B.; Waddington, D.; Mrig, L.

doi:10.1109/pvsc.1993.347108

Cited by 13 publications

(4 citation statements)

References 9 publications

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“…To avoid overestimation of the photocurrent of the solar cells, we used a mask to define an illumination area (1 cm 2 ) that was slightly smaller than the device area (1.04 cm 2 ). The solar cells were exposed to AM1.5 illumination under 100 mW/cm 2 (T C ¼ 50 C, 1000 h, open circuit) 14) or 125 mW/cm 2 (T C ¼ 48 C, 310 h, open circuit) 15) intensities. In addition, some of the solar cells were exposed to 300 mA/cm 2 illumination at T c ¼ 60 C for 6 h as a quick degradation test.…”

Section: Methodsmentioning

confidence: 99%

Amorphous-Silicon-Based Thin-Film Solar Cells Exhibiting Low Light-Induced Degradation

Matsui

Sai

Saito

et al. 2012

Jpn. J. Appl. Phys.

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We have applied a triode electrode configuration in the plasma-enhanced chemical vapor deposition (PECVD) process to grow intrinsic hydrogenated amorphous silicon (a-Si:H) light absorbers for the fabrication of p–i–n junction solar cells. Although the deposition rate is lower (0.1–0.3 Å/s) than that of the conventional diode PECVD process, the light-soaking stability of the solar cell is markedly improved and less sensitive to the cell thickness due to the reduced Si–H2 bond density in the a-Si:H i-layer. The a-Si:H single-junction solar cells exhibit low light-induced degradation of conversion efficiency (Δη/ηini∼10%) in comparison with that of high-efficiency solar cells reported to date. By applying the improved a-Si:H layers as top-cell absorbers in a-Si:H/hydrogenated microcrystalline silicon (µc-Si:H) tandem device, the light-induced degradation can be reduced even further (Δη/ηini\lesssim5%). As a result, we obtain confirmed stabilized efficiencies of 9.6 and 11.3% for a-Si:H single-junction and a-Si:H/µc-Si:H tandem solar cells, respectively.

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Section: Methodsmentioning

confidence: 99%

Amorphous-Silicon-Based Thin-Film Solar Cells Exhibiting Low Light-Induced Degradation

Matsui

Sai

Saito

et al. 2012

Jpn. J. Appl. Phys.

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“…[9]- [10]. These two effects are also accompanied by the annealing process provided the operation temperature is over certain threshold.…”

Section: Introductionmentioning

confidence: 99%

Modeling A-Si module ageing using the concept of environmental dose

Zhu

Bliss

Betts

et al. 2013

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)

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“…4) is utilized. [1], [2] The temperature uniformity of the test modules has been measured to be :! :: 4°C, and the irradiance uniformity is within :!…”

Section: Light-soak Testing Of Prototype A-si Modulesmentioning

confidence: 99%

“…Two series of controlled light soak tests have been conducted on vintage 1990 and 1991 multijunction a-Si modules. [1), [2) After controlled light-soak testing, some of the test modules were installed outdoors at NREL's PV Outdoor Test Site to study their outdoor performance. We have observed that under outdoor exposure, the modules degrade further in performance, possibly due to lower outdoor temperatures and varying spectra.…”

Section: Introductionmentioning

confidence: 99%

Outdoor performance stability and controlled light-soak testing of amorphous silicon multijunction modules at NREL

Mrig

Burdick

Luft

et al.

Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and

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The National Renewable Energy Laboratory (NREL) has been testing amorphous silicon (a-Si) Photovoltaic (PV) modules for more than a decade. NREL has been conducting controlled light-soak testing of multijunction a-Si modules to characterize their performance for stability evaluation as well as to benchmark the technology status. Some of the test modules, after controlled light-soak testing, have been installed outdoors. We have observed that under outdoor exposure, the modules further degrade in performance, possibly due to lower outdoor temperatures and varying spectra. The paper presents data on the light-induced degradation for the third controlled light-soak test on multijunction a-Si modules as well as outdoor performance data on single-and multijunction modules under prevailing conditions.

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Second controlled light-soaking experiment for amorphous silicon modules

Cited by 13 publications

References 9 publications

Amorphous-Silicon-Based Thin-Film Solar Cells Exhibiting Low Light-Induced Degradation

Amorphous-Silicon-Based Thin-Film Solar Cells Exhibiting Low Light-Induced Degradation

Modeling A-Si module ageing using the concept of environmental dose

Outdoor performance stability and controlled light-soak testing of amorphous silicon multijunction modules at NREL

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