recipe

A recipe is a defined set of process parameters that control one process step in semiconductor manufacturing. **Parameters include**: Time, temperature, pressure, gas flows, RF power, bias, chemical concentrations. **Specificity**: Recipes are tool-specific and often wafer-specific. Same process may have different recipes on different tools. **Structure**: May include multiple steps (preheat, main process, purge, cool) each with own parameters. **Development**: Engineers develop and optimize recipes for target results. DOE (Design of Experiments) used for optimization. **Qualification**: New recipes undergo qualification testing before production use. **Version control**: Recipes are versioned with change tracking. **Recipe management**: Central database stores qualified recipes. Tool downloads recipe for each lot. **Security**: Access controls prevent unauthorized recipe changes. **Tuning parameters**: Some parameters may be adjustable within limits for fine-tuning. **Recipe vs process**: Recipe is the how (settings), process is the what (physical/chemical result). **Golden recipes**: Fully qualified, locked recipes for production. **Engineering recipes**: For development and troubleshooting.