Development of a very fast spectral response measurement system for analysis of hydrogenated amorphous silicon solar cells and modules

Rodríguez, José Mendoza; Fortes, M.; Alberte, C.; Vetter, Michael; Andreu, J.

doi:10.1016/j.mseb.2012.10.009

Cited by 12 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the monochromator allows measurements with increased wavelength resolution that may not be strictly necessary for crystalline solid devices due to the smoothness of the SR(λ). A most recent alternative approach based on commercial LEDs (Light Emitting Diodes) as the monochromatic light source has been proposed for the measurement of a-Si devices with explicit limitations in both the active wavelength range and potential area of the solar cells under test [13]. Moreover, for large area a-Si modules it has been proposed a setup where an off-axis reflector projects the monochromatic beam on part of the module and the light bias is provided by a set of 24 quartz tungsten halogen (QTH) lamps and 5 power LEDs to give subcell selection [14].…”

Section: Introductionmentioning

confidence: 99%

On the spectral response measurement of multijunction solar cells

Garcı́a

Socolovsky

Carlos

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

This work presents particular aspects dealing with the measurement of the spectral response (SR) on multijunction solar cells, a tricky and somewhat complex issue. Here, we demonstrate the development of a facility to measure SR between 300 nm and 1900 nm on III–V solar cells for space applications, particularly oriented to measure large area triple junction (3J) InGaP/GaAs/Ge cells, although it can be utilized to measure other types of devices. The equipment is based on narrowband interference filters and a novel and low cost approach of two dichroic lamps as bias light source, used to select the subcell to be measured using suitable bandpass filters, whereas a simple incandescent halogen lamp is used to generate the monochromatic light beam. The signal is measured on an appropriate resistance inserted in a serial circuit using a lock-in amplifier. Measurement is fully automated, which allows operator independent results. Detailed studies performed on bias spectrum conditions and voltage biasing for these types of cell are showed, as well as a thorough treatment of the uncertainty and measurement error sources. Preliminary SR measurement results demonstrate the good performance of this setup. As an example, the results of the application of this setup to analyze radiation damage induced by 10 MeV protons are shown.

show abstract

Section: Introductionmentioning

confidence: 99%

On the spectral response measurement of multijunction solar cells

Garcı́a

Socolovsky

Carlos

2017

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…as solar cells, photodetectors, large-area displays, and xerographic applications. [1][2][3][4][5][6][7][8][9] Several common deposition techniques have been used to prepare nc-Si:H films, including plasma enhanced chemical vapor deposition (PECVD), 10 magnetron sputtering, 13 hot-wire CVD, 14 electron beam evaporation 11 and electron cyclotron resonance plasma CVD. 12 Among these preparation techniques, only PECVD had been widely used in industrial applications because of its remarkable advantages: low production cost, large-scale deposition and low-temperature production.…”

Section: Introductionmentioning

confidence: 99%

Morphological characteristics and optical properties of hydrogenated amorphous silicon thin films

et al. 2016

View full text Add to dashboard Cite

Hydrogenated amorphous silicon (a-Si:H) thin films were prepared by radio frequency (RF) plasma enhanced chemical vapor deposition (RF-PECVD) technique with silane (SiH 4 ) as reactive gas. The influence of process parameters on the morphological characteristics and optical properties of a-Si:H thin films were systematically investigated. When the RF power density was taken as the only variable, it firstly improves the smoothness of the surface with increasing the RF power density below the value of 0.17 W/cm 2 , and then exhibits an obvious degradation at further power density. The refractive index, extinction coefficient, optical energy gap initially increase and reach a maximum at 0.17 W/cm 2 , followed by a significant decrease with further RF power density. When the RF power density was taken as the only variable, the surface of a-Si:H thin films become smoother by increasing the reaction pressure in the investigated range (from 50 Pa to 140 Pa), and the refractive index, extinction coefficient, optical energy gap increase with increasing of reaction pressure. The effect of RF power density and the reaction pressure on the morphological characteristics and optical properties of a-Si:H thin films was obtained, contributing to the further studies of the performance and applications of a-Si:H thin films.

show abstract

“…These include a monochromator-based approach with a broad spectrum input light source [4,[7][8][9]11], a filterbased method with interference filters placed in front of the broad-spectrum light [5,12], using tunable laser sources [13] and using light-emitting diodes (LEDs) [14][15][16][17]. Each technique provides a set of advantages and limitations with regard to the responsivity measurements.…”

Section: Introductionmentioning

confidence: 99%

“…Multilamp LED arrays, for example, have recently been successfully used to perform fast spectral response measurements over a wide spectral range [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Absolute spectral responsivity measurements of solar cells by a hybrid optical technique

et al. 2013

View full text Add to dashboard Cite

An irradiance mode, absolute differential spectral response measurement system for solar cells is presented. The system is based on combining the monochromator-based approach of determining the power mode spectral responsivity of cells with an LED-based measurement to construct a curve representing the light-overfilled absolute spectral response of the entire cell. This curve can be used to predict the short-circuit current (I(sc)) of the cell under the AM 1.5 standard reference spectrum. The measurement system is SI-traceable via detectors with primary calibrations linked to the NIST absolute cryogenic radiometer. An uncertainty analysis of the methodology places the relative uncertainty of the calculated I(sc) at better than ±0.8%.

show abstract

Development of a very fast spectral response measurement system for analysis of hydrogenated amorphous silicon solar cells and modules

Cited by 12 publications

References 5 publications

On the spectral response measurement of multijunction solar cells

On the spectral response measurement of multijunction solar cells

Morphological characteristics and optical properties of hydrogenated amorphous silicon thin films

Absolute spectral responsivity measurements of solar cells by a hybrid optical technique

Contact Info

Product

Resources

About