Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to condition of coating material
Patent
1981-07-02
1983-07-12
Smith, John D.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to condition of coating material
118719, 118725, 118718, 118730, C23C 1310
Patent
active
043924514
ABSTRACT:
Apparatus for forming thin-film, large area solar cells having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n-type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI.sub.2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order of about 2.5 microns to about 5.0 microns (.congruent.2.5 .mu.m to .congruent.5.0 .mu.m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the transient n-type material in the first semiconductor layer to evolve into p-type material, thereby defining a thin layer heterojunction device characterized by the absence of voids, vacancies and nodules which tend to reduce the energy conversion efficiency of the system.
REFERENCES:
patent: 3316386 (1967-04-01), Yaffe et al.
patent: 3612859 (1971-10-01), Schumacher
patent: 4199383 (1980-04-01), Wittry
White et al., "Growth of CuInSe.sub.2 Films Using Molecular Beam Epitaxy", J. Vac. Sci. Technology, vol. 16, No. 2, Mar./Apr. 1979, pp. 287-289.
Chen Wen S.
Mickelsen Reid A.
Plantz Bernard F.
Smith John D.
The Boeing Company
LandOfFree
Apparatus for forming thin-film heterojunction solar cells emplo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for forming thin-film heterojunction solar cells emplo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming thin-film heterojunction solar cells emplo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-193412