37 research outputs found
The Caravan Rolls On
Full text linkPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/68409/2/10.1177_107554707900100103.pd
Characterization of thin film CuInSe2 and CuGaSe2: The existence and identification of secondary phases
No full textThe use of 2<sup>nd</sup> and 3<sup>rd</sup> level correlation analysis for studying degradation in polycrystalline thin-film solar cells
Full text linkThe direct correlation of CDTE solar cell stability with mobile ion charge generation during accelerated lifetime testing
No full textExcess dark currents and transients in thin-film CdTe solar cells: implications for cell stability and encapsulation of scribe lines and cell ends in modules
No full textSecondary and polymorphic phase behavior of thin film CuInSe/sub 2/: ramifications on the device performance
No full textPhysical, chemical, and structural modifications to thin-film CuInSe/sub 2/-based photovoltaic devices
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Electrical properties of CdTe/CdS AND CdTe/SnO2 solar cells studied with scanning kelvin probe microscopy
Full text linkPreparation and Characterization of CdS<sub>x</sub>Te<sub>1−x</sub> Alloys and Films
Get PDFABSTRACTIntermixing at the CdS/CdTe interface is considered crucial for the performance of CdTe-based solar cells. High-efficiency devices have been fabricated in spite of large lattice mismatch between CdS and CdTe. Intermixing and formation of CdSxTe1−x alloys in present-generation devices result from high-temperature CdTe deposition and post-deposition CdCl2 treatment. In this paper, we present our work on preparation of CdSxTe1−x-alloy powders and films. In this process, the CdS and CdTe powders are sized and mixed, isostatically pressed into a bar, sealed into closed-quartz ampoules, annealed at temperatures >1000°C, and water quenched. X-ray diffraction (XRD) analysis showed that they contained only distinct phases on S-rich and Te-rich sides of the phase diagram. Recently, two new batches of CdSxTe1−x material, produced by an improved process have been obtained (x =0.71 and x= 0.35 in CdSxTe1−x alloy). Initial XRD results from the films deposited by close spaced sublimation (CSS) using these powders reveal that both samples of bulk powders (prior to CSS deposition) are single-phase and demonstrate CdS-like characteristics (hexagonal). We have deposited CdSxTe1−x-alloy films using these powders. These alloy powders evaporate more congruently as opposed to mixed powders of CdS and CdTe. We will also present results on the structural properties of thin CdSxTe1−x alloy films deposited using these powders by CSS.</jats:p
