# Semiconductor doping (technology) internal name `semiconductor-doping` · tier 4 (pY science pack 2, [tier 4](https://factorio.kalzumeus.com/tier/4.md)) HTML page: https://factorio.kalzumeus.com/tech/semiconductor-doping/ ## Cost 900 units of (1 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 2 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 3 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 6 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md)), 90 s each. ## Requires (4) - [Antimony processing - Stage 2](https://factorio.kalzumeus.com/tech/antimony-mk02.md) - [Aramid](https://factorio.kalzumeus.com/tech/aramid.md) - [Phosphorous processing](https://factorio.kalzumeus.com/tech/phosphorous-processing.md) - [Silicon processing - Stage 1](https://factorio.kalzumeus.com/tech/silicon-mk01.md) ## Leads to (1) - [Small scale integrated circuits](https://factorio.kalzumeus.com/tech/integrated-circuits-1.md) ## Unlocks (6 recipes) ### Etching solution (`etching`) - 10 s · tier 4 · productivity modules allowed - Ingredients: 100 × [Phosphoric acid](https://factorio.kalzumeus.com/fluid/phosphoric-acid.md), 100 × [Sulfuric acid](https://factorio.kalzumeus.com/fluid/sulfuric-acid.md), 50 × [Hydrogen peroxide](https://factorio.kalzumeus.com/fluid/hydrogen-peroxide.md), 10 × [Lard](https://factorio.kalzumeus.com/item/mukmoux-fat.md) - Results: 150 × [Etching solution](https://factorio.kalzumeus.com/fluid/etching.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ### Heavily n-doped silicon (`heavy-n`) - 5 s · tier 4 · productivity modules allowed - Ingredients: 5 × [Silicon wafer](https://factorio.kalzumeus.com/item/silicon-wafer.md), 20 × [Rare earth oxides](https://factorio.kalzumeus.com/item/reo.md), 20 × [Etching solution](https://factorio.kalzumeus.com/fluid/etching.md), 200 × [Antimony Pulp 02](https://factorio.kalzumeus.com/fluid/sb-pulp-02.md) - Results: 10 × [Heavily n-doped silicon](https://factorio.kalzumeus.com/item/heavy-n.md) - Made in: Gas processing unit MK 01, Gas processing unit MK 02, Gas processing unit MK 03, Gas processing unit MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ### Lightly n-doped silicon (`light-n`) - 5 s · tier 4 · productivity modules allowed - Ingredients: 5 × [Silicon wafer](https://factorio.kalzumeus.com/item/silicon-wafer.md), 20 × [Phosphine gas](https://factorio.kalzumeus.com/fluid/phosphine-gas.md), 20 × [Etching solution](https://factorio.kalzumeus.com/fluid/etching.md) - Results: 10 × [Lightly n-doped silicon](https://factorio.kalzumeus.com/item/light-n.md) - Made in: Gas processing unit MK 01, Gas processing unit MK 02, Gas processing unit MK 03, Gas processing unit MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ### Lightly p-doped silicon (`p-dope`) - 5 s · tier 4 · productivity modules allowed - Ingredients: 5 × [Silicon wafer](https://factorio.kalzumeus.com/item/silicon-wafer.md), 2 × [Zinc acetate](https://factorio.kalzumeus.com/item/zinc-acetate.md), 20 × [Diborane](https://factorio.kalzumeus.com/fluid/diborane.md), 20 × [Etching solution](https://factorio.kalzumeus.com/fluid/etching.md) - Results: 10 × [Lightly p-doped silicon](https://factorio.kalzumeus.com/item/p-dope.md) - Made in: Gas processing unit MK 01, Gas processing unit MK 02, Gas processing unit MK 03, Gas processing unit MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ### Silicon wafer (`silicon-wafer`) - 8 s · tier 4 · productivity modules allowed - Ingredients: 5 × [Electronic Grade Silicon](https://factorio.kalzumeus.com/item/eg-si.md), 3 × [Graphite](https://factorio.kalzumeus.com/item/graphite.md), 2 × [Crushed quartz](https://factorio.kalzumeus.com/item/crushed-quartz.md), 1 × [Aramid fiber](https://factorio.kalzumeus.com/item/aramid.md) - Results: 100 × [Flue gas](https://factorio.kalzumeus.com/fluid/flue-gas.md), 2 × [Silicon wafer](https://factorio.kalzumeus.com/item/silicon-wafer.md) - Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md) ### Zinc acetate (`zinc-acetate`) - 3.5 s · tier 4 · productivity modules allowed - Ingredients: 10 × [Zinc plate](https://factorio.kalzumeus.com/item/zinc-plate.md), 100 × [Acetic acid](https://factorio.kalzumeus.com/fluid/acetic-acid.md) - Results: 1 × [Zinc acetate](https://factorio.kalzumeus.com/item/zinc-acetate.md) - Made in: Mixer MK 01, Mixer MK 02, Mixer MK 03, Mixer MK 04 - Unlocked by: [Semiconductor doping](https://factorio.kalzumeus.com/tech/semiconductor-doping.md)