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Fabrication of 200 nm field effect transistor by X-ray lithography with a laser-plasma X-ray source

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11 Author(s)
Reeves, C.M. ; Dept. of Electr. Eng., Edinburgh Univ., UK ; Turcu, I.C.E. ; Prewett, P.D. ; Gundlach, A.M.
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The critical dimensions required for 1 Gbit semiconductor technology will be beyond the capabilities of optical lithography. The laser-generated plasma X-ray source provides an alternative to synchrotron radiation for lithography, providing a quasi point source of radiation at ~1 nm wavelength. The 180 nm lithography required for 1 Gbit has been demonstrated by exposure of a novel commercial resist using a laboratory prototype plasma X-ray source. A MOSFET with 200 nm gate length has been produced using the new technology in mix-and-match with conventional methods. The device shows good electrical characteristics, demonstrating the promise of this approach

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Electronics Letters  (Volume:31 ,  Issue: 25 )