ShaneLogic/cds-cdte-solar-cell-fabrication
.claude/skills/cds-cdte-solar-cell-fabrication/SKILL.md
Use this skill when manufacturing CdS/CdTe thin-film solar cells. It covers the complete fabrication process including substrate preparation, CdS and CdTe deposition via evaporation, contact formation, and the critical CdCl2 heat treatment step for crystallization and doping.
$ install --global
skillsauthnpx skillsauth add ShaneLogic/SolarLab cds-cdte-solar-cell-fabricationInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- cds-cdte-solar-cell-fabrication
- description:
- Use this skill when manufacturing CdS/CdTe thin-film solar cells. It covers the complete fabrication process including substrate preparation, CdS and CdTe deposition via evaporation, contact formation, and the critical CdCl2 heat treatment step for crystallization and doping.
CdS/CdTe Solar Cell Fabrication
This skill provides the complete workflow for fabricating functional CdS/CdTe solar cells using evaporation techniques and heat treatment.
When to Use
Use this skill when:
- Manufacturing CdS/CdTe thin-film photovoltaic cells
- Setting up production lines for CdTe-based solar modules
- Troubleshooting CdS/CdTe cell fabrication issues
- Optimizing deposition parameters for CdS/CdTe devices
Prerequisites
Ensure you have the following materials and equipment before starting:
- Conductive glass substrate (CTO layer)
- CdS (Cadmium Sulfide) source material
- CdTe (Cadmium Telluride) source material
- CdCl2 (Cadmium Chloride) flux for heat treatment
- Evaporation deposition system
- Heat treatment furnace capable of 450°C
Fabrication Process
1. Substrate Preparation
- Use conducting glass substrate with CTO (Transparent Conductive Oxide) layer
- Clean substrate to remove contaminants
- Ensure surface is ready for deposition
2. CdS Deposition
- Method: Evaporation
- Thickness: Below 1 μm (optimal ~200 Angstroms)
- Critical constraint: Minimize thickness to prevent filtering solar spectrum beyond 2.4 eV bandgap
- Verify uniform coverage
3. CdTe Deposition
- Method: Evaporation (close spaced sublimation technique)
- Thickness: Typically 2 μm
- Ensure proper crystalline structure formation
4. Contact Formation
- Deposit metal contact layer on top of CdTe
- Ensure good electrical contact
5. Heat Treatment (Crucial Step)
This is the most critical step for cell performance:
- Temperature: ~450°C
- Agent: CdCl2 flux
- Duration: Short time (precise timing required)
Expected Results:
- Partial crystallization of both CdS and CdTe semiconductors
- Copper doping of the CdS layer (copper source from flux or outer interface components)
Output
A functional CdS/CdTe solar cell ready for integration into modules or further testing.
Key Constraints
- CdS layer must be < 1 μm (optimally ~200 Angstroms)
- Heat treatment temperature must be precisely controlled at ~450°C
- CdCl2 flux is essential for proper crystallization and doping
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