Welcome Sam Zeloof!Sam is graduating high school soon, he's currently finishing up his senior year.Sam started the process of making semiconductors in his garage 1.5 years ago0h 1m 15sSam was inspired by Jeri Ellsworth's videos0h 2m 45sHe'll be attending Carnegie Mellon University in the fall.0h 8m 7sBook: Microchip Fabrication by Peter Van Zant0h 10m 23sChemicals are hardest to get0h 12m 21sHF in contained in Whink Rust Cleaner0h 12m 40sStump remover0h 12m 54sBoric Acid is in roach killer0h 12m 59sSam gives a tour of his lab 0h 14m 10sRecently finished version of a Dual PMOS differential amplifier!0h 15m 49sUPDATE: Sam has published about his recently completed ICAdded SEM0h 16m 3sWasn't an option to buy a vapor deposition machine, needed to build0h 17m 43sIt was PVD, not CVD0h 18m 9sSputtering aluminum0h 18m 59sMean Free Path0h 20m 26sFollow along with the slides Sam prepared for a recent showcase of his work in Newark at the Trenton computer fest0h 20m 52sStart with wafer, buy off eBay0h 24m 48sCheck resistivity0h 25m 10sMight be obvious, but Sam is not in a clean room0h 27m 13sBoth Sam and Chris have worked in a Class 100 clean room0h 28m 10sUDC internship working on organic LED processes0h 28m 18sOxidizing layer0h 29m 43sPhotolithography0h 30m 9sSilicon gate vs metal gate0h 31m 36sSelf aligned gate0h 32m 14s4 mask set0h 33m 3sWhat is doping?0h 33m 42sElectrons and holes. Talking about holes makes understanding organic semiconductors easier.0h 35m 37sDopants are ppm and ppb0h 37m 55sPhosphine and diborane0h 38m 49sAdding chemicals and then diffusing0h 41m 14sHardest piece to find is the furnace0h 41m 26sHF acid0h 46m 26sHF etching of photoresist/oxide0h 49m 26sAdhesion promoter HMDS0h 50m 13sSpinning on the dopants0h 53m 40sSpin coating allows uniform application0h 54m 0sMigration of dopants down into the lattice0h 54m 52sGet rid of thick oxide0h 57m 12sGrow gate oxide0h 57m 25sField oxide is 5000-10000A0h 57m 49sGate oxide is 500 A0h 58m 11sAlignment on wafers0h 59m 43sDoing photolithography with a projector1h 0m 49sMike Harrison talking about projectors1h 2m 26sEUV 13nm1h 2m 39sDouble Patterning1h 3m 20sScored corner and do y = mx + b1h 6m 30sGrateful dead bears1h 8m 25sZeloof Semiconductor1h 9m 57sThinner layers you dilute etchant1h 10m 45sCurve tracer1h 12m 1sPolished surface is tough for probing1h 12m 48sMake a 4 pin pogo tester1h 13m 2s3rd masking step (contact)1h 14m 28sMetalization1h 15m 30sEverything is shorted1h 15m 36sNeed to expose the traces that are remaining1h 15m 42sHow many transistors are you making?1h 16m 33sDual differential amplifier1h 17m 40sWith larger feature sizes if it looks good, i'ts going to work1h 18m 26sCMP1h 19m 35sLittle Lisa slurry1h 19m 54sSilane and CVD isn't an option1h 21m 6sPolysilicon enables more types/more intricate transistos1h 21m 35sMax output swing isn't possible with metal gate1h 22m 17sItsy Chipsy chip service1h 28m 1sDesign tools - Magic VLSI1h 28m 41sDrawing block of transistors1h 29m 17sQFlow1h 29m 34sGoing from Verilog to masks1h 30m 4sMOSIS1h 33m 36sWirebonder in process1h 34m 25sFormer guest Tony Long might have one?1h 34m 54sCMU has a new cleanroom and Sam will be allowed to work there as a freshman1h 36m 8sFind Sam on YouTube, Twitter and via email1h 37m 46s
