MILESTONES
in
Semiconductor Science and Technology
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Discovery/Innovation | Pioneers/Inventors | Place/Institution | Reference |
| 1250 | Arsenic (As) first Isolated | Albertus Magnus | ||
| 1669 | Phosphorus (P) discovered | H. Brandt | Hamburg, Germany | |
| 1772 | Nitrogen (N) discovered | D. Rutherford | Edinburgh, Scotland | |
| 1808 | Boron (B) discovered | Sir Humphrey
Davy
Gay-Lussac and L. J. Thenard |
London, U.
K.
Paris, France |
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| 1817 | Selenium (Se) discovered | J. J. Berzelius | Stockholm, Sweden | |
| 1824 | Silicon (Si) discovered | J. J. Berzelius | Stockholm, Sweden | |
| 1825 | Aluminum (Al) discovered | H. C. Oersted | Copenhagen, Denmark | |
| 1863 | Indium (In) discovered | F. Reich and H. Richter | Freiberg, Germany | |
| 1875 | Gallium (Ga) discovered | P. Lecoq de Boisbaudran | Paris, France | |
| 1886 | Germanium (Ge) discovered | Clemens A. Winkler | Freiberg, Germany | J. Für Practische Chemie, 34, 177 (1886) |
| 1891 | Boron Phosphide (BP) synthesized | M. Besson | Comp. Rend. 113, 78 (1891) | |
| 1907 | Aluminum Nitride (AlN) synthesized | F. Fichtes | Z. anorg. chem., 54, 322 (1907) | |
| 1910 | Indium Nitride (InN) synthesized | Fischer and Schroter | Ber. duet. Chem. Ges. 43, 1465 (1910) | |
| 1910 | Indium Phosphide (InP) synthesized | A. Theil and H. Koelsch | Z. anorg. Chem., 66, 319 (1910) | |
| 1922 | Aluminum Arsenide (AlAs) synthesized | Q. A. Mansuri | J. Chem. Soc. 121, 2272 (1922) | |
| 1932 | Gallium Nitride (GaN) synthesized | W. C. Johnson,
J. B. Parsons and
M. C. Crew |
J. Phys. Chem. 36, 2651 (1932) | |
| 1950 | Ge single crystal growth | G. K. Teal and J. B. Little | Bell Labs, U.S.A. | Phys. Rev. 78, 647 (1950) |
| 1952 | Si single crystal growth | G. K. Teal,
M. Sparks and
E. Buehlers |
Bell Labs, U.S.A. | Proc. IRE. 40, 906 (1952) |
| 1951
1953 |
Indium Antimonide
(InSb)
- first ingot - single crystal |
H. Welker
R. Gremmelmaier and O. Madelung |
Germany
Germany |
Z. Naturforsch. 8a, 333 (1953) |
| 1953 | Semiconducting
Arsenides
Indium Arsenide (InAs) Gallium Arsenide (GaAs) |
F. Gans et al | Compt. Rend. 237, 310 (1953) | |
| 1954 | Gallium Phosphide
(GaP)
(semiconducting properties) |
O. G. Folberth and F. Oswald | Z. Naturforsch. 94, 1050 (1954) | |
| 1956 | Cadmium Selenide (CdSe) single crystal | D. M. Heinz and E. Banks | J. Chem. Phys. 24, 391 (1956) | |
| 1958 | Cadmium Sulphide (CdS) single crystal | W. E. Medealf and R. H. Fahriq | The Eagle-Picher Research Lab. U.S.A. | J. Electrochem. Soc. 105, 719 (1958) |
| 1959 | Zinc Sulphide
(ZnS) crystal
Zinc Selenide (ZnSe) crystal |
A. G. Fischer | General Electric Company, Ohio U.S.A. | J. Electrochem. Soc. 106, 838 (1959) |
| Diamond | ||||
| 1952 | Natural semiconducting diamond | J. F. H. Custers | Physica 18, 489 (1952) | |
| 1953 | High pressure synthesis of diamond | ASEA, Sweden | Unpublished | |
| 1955 | High pressure synthesis of diamond | General Electric (GE), U.S.A. | Nature | |
| 1962 | Synthetic semiconducting diamond | C. M. Huggins and P. Cannon | General Electric (GE) Research Lab, U.S.A. | Nature, 194, 829 (1962) |
| 1976 | CVD Diamond films on nondiamond substrates | B. V. Spitzyn,
L. L. Bouliov and
B. V. Derjaguin |
Institute of Physical Chemistry, USSR Academy of Sciences, Moscow | J. Cryst. Growth (1981) |
| 1982 | CVD Diamond films at subatmospheric pressure | N. Setaka et al | NIRIM, Tsukuba, Japan | |
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Discovery/Innovation | Pioneers/Inventors | Place/Institution | Reference |
| 1833 | Negative temperature coefficient of resistance in Silver Sulfide (AgS) | M. Faraday
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England | Experimental
Researches in Electricity, series IV, 433 (1833)
Beibl. Ann. Phys. 31, 25 (1834) |
| 1839 | Photovoltaic effect | E. Becquerel | Compt. Rend. 9, 561 (1839) | |
| 1873 | Photoconductivity in Selenium (Se) | W. Smith | J. Soc. Telegraph Engrs, 2, 31 (1873) | |
| 1876 | Photovoltaic effect in Selenium (Se) | W. G. Adams and R. E. Day | England | Proc. Roy. Soc. London Ser. A 25, 113 (1876) |
| 1897 | Discovery of Electron | J. J. Thomson | Cavendish Lab, Cambridge, U.K. | Phil. Mag. 44, 293 (1897) |
| 1907 | Discovery of electroluminescence - blue light emission from Silicon Carbide (SiC) | H. J. Round | Electron World 19, 309 (1907) | |
| 1911 | Semiconductor (Halbleiter) - terminology first introduced | J. Königsberger and J. Weiss | Germany | Ann. Phys. 35, 1 (1911) |
| 1924 | Detailed study of radiative recombination in Silicon Carbide (SiC) | O. V. Lossev |
|
Telgrafia i
Telefonia 18, 61 (1923)
Wireless World and Radio Rev., 271, 93 (1924) |
| 1930 | Photovoltaic effect in Cu2O | W. Schottky | Siemens Lab, Germany | Z. Physik 31, 139 (1930) |
| 1930 | Defect’ semiconductors
+RH – Oxidized Compounds (deficiency of metal) Excess’ Semiconductors -RH – Reduced Compounds (excess of metal) |
C. Wagner
|
Z. Chem. Phys.
B 11, 163 (1930)
Z. Chem. Phys. B 22, 195 (1933) |
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| 1931 | Transport theory of semiconductors based on systematic investigation | A. H. Wilson | England & Leipzig, Germany | Proc. R. Soc. London Ser. A 133, 458 (1931). |
| 1931 | Zener tunneling | C. Zener | Proc. R. Soc. London A 130, 499 (1931) | |
| 1932 | Surface (Tamm) states | I. Tamm | Ioffe Physico-Technical Institute, USSR | Phys. Z. Sowjetunion 1, 733 (1932) |
| 1936 | Exciton | J. Frenkel | Ioffe Physico-Technical Institute, USSR | Phys. Z. Sowjetunion 9, 158 (1936) |
| 1936 | A.C. electroluminesence in ZnS | G. Destriau | France | J. Chimie Phys. 33, 587 (1936) |
| 1937 | Photoconductivity (Alkali Halides) | R. W. Pohl | Göttingen, Germany | Proc. Phys. Soc. 43, 3 (1937) |
| 1938 | Model of rectification in Cu2O | B. Davydov | Ioffe Physico-Technical Institute, USSR | C. R. (Dokl.) Acad. Sci. USS, 20, 283 (1938) |
| 1938 | Schottky Barrier
Theory
Metal – Semiconductor Rectifier theory |
W. Schottky
N. F. Mott |
Siemens Lab,
Germany.
Bristol University, U.K. |
Naturwissenschaften,
26,
843 (1938)
Proc. Cambr. Philos. Soc. 34, 568 (1938) |
| 1946 | Photovoltaic effect in Ge | S. Benzer | Purdue University, U.S.A. | Phys. Rev. 72, 1267 (1947) |
| 1952 | III-V semiconductivity demonstrated | H. Welker | Germany | Z. Naturforsch. 7a, 744 (1952) |
| 1952 | Shockley-Read-Hall theory | R. N. Hall | General Electric (GE) Research Lab, U.S.A. | Phys. Rev. 87, 387 (1952) |
| W. Shockley and W. T. Read | Bell Labs, U.S.A. | Phys. Rev. 87, 835 (1952) | ||
| 1952 | Ge and Si radiative recombination | J. R. Haynes and H. B. Briggs | Bell Labs, U.S.A. | Bull. Am. Phys. Soc., 27, 14 (1952) |
| 1954 | Ge radiative recombination | W.van Roosbroeck
and
W. Shockley |
Bell Labs, U.S.A. | Phys. Rev. 94, 1558 (1954) |
| 1958 | Electroabsorption (Franz-Keldysh effect) | W. Franz | Z. Naturforsch, 13a, 484 (1958) | |
| L. V. Keldysh | Soviet Phys. JETP, 34, 788 (1958) | |||
| 1961 | Ridley-Watkins-Hilsum mechanism | B. K. Ridley and T. B. Watkins | Proc. Phys. Soc. London, 78,293 (1961) | |
| -62 | C. Hilsum | Proc. IRE, 50, 185 (1962) | ||
| 1963 | Gunn effect | J. B. Gunn | Solid State Commun. 1, 88 (1963) | |
| 1962 | GaAs radiative recombination | R. J. Keyes and T. M. Quist | Proc. IRE, 50, 1822 (1962) | |
| 1969 | Superlattice
– idea |
L. Esaki and R. Tsu | IBM, U.S.A. | IBM Research, RC 2418, March 1969 |
| 1970 |
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A. E. Blakeslee, C. F. Aiotta | IBM J. Res. Devel. 14, 686 (1970) | |
| 1972 | GaAs/AlGaAs structure | R. Tsu and L. Esaki | Proc. 11th Int. Conf. Phys. Semiconductors, Warsaw, Poland (1972) p.431 | |
| 1971 | Blue light emission from GaN (MIS diode) | J. I. Pankove et al | RCA Lab, Princeton, U.S.A. | RCA Review
32,
383 (1971)
J. Lum. 5, 34 (1972) |
| 1974
1978 1983 |
Hydrogen passivation
of semiconductors
– Ge – a-Si – Si |
E. E. Haller
and W. L. Hansen
J. I. Pankove et al C. T. Sah et al J. I. Pankove et al |
Univ. of California,
Berkeley
RCA Lab, Princeton, U.S.A. Univ. Illinois at Urbana- Champaign RCA Lab, Princeton, U.S.A. |
Solid Stat.
Commun. 15, 687 (1974)
Appl. Phys. Lett. 32, 812 (1978) Appl. Phys. Lett. 43, 204 (1983) Phys. Rev. Lett. 51, 2224 (1983) |
| 1980 | Quantum Hall Effect (QHE) | Klaus von Klitzing et al | High Magnetic Field Laboratory, Grenoble, France | Phys. Rev. Lett. 45, 494 (1980) |
| 1982
1983 |
Fractional
Quantum Hall Effect (FQHE)
- discovery - theory |
D. C. Tsui,
H. L. Stormer and
A. C. Gossard R. B. Laughlin |
Bell Labs,
U.S.A.
Lawrence Livermore National Lab, U. S. A. |
Phys. Rev.
Lett. 48, 1559 (1982)
Phys. Rev. Lett. 50, 1395 (1983) |
| 1989 | Composite Fermion | J. K. Jain | SUNY, Stony Brook | Phys. Rev. Lett. 63, 199 (1989) |
| 1990 | Porous Silicon | L. Canham | Royal Signals & Radar Estab., U.K. | Appl. Phys. Lett. 57, 1046 (1990) |
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| 1879 | Hall effect | E. H. Hall | Harvard University, U.S.A. | Am. J. Math. 2, 287 (1879). |
| 1907 | First systematic use of Hall effect – Si, Se, Te shown to be semiconductors | J. KØ nigsberger | Germany | Jb. Radioakt
4,
158 (1907)
Jb. Radioakt 11, 84 (1914) |
| 1909 | First systematic use of Hall effect on CuI | K. Bädeker | Germany | Phys. Z. 29, 506 (1909) |
| 1918 | Crystal Pulling Technique | J. Czochralski | Poland | Z. Physik. Chem., 92, 219 (1918) |
| 1925 | Hall effect used to show Ge as semiconductor | E. Merrit | Proc. Nat. Acad. Sci., Wash. 11, 743 (1925) | |
| 1951 | Haynes-Shockley experiment | J. R. Haynes and W. Shockley | Bell Labs, U.S.A. | Phys. Rev. 81, 935 (1951) |
| 1952 | Zone Refining (Ge) | W. G. Pfann | Bell Labs, U.S.A. | Trans AIME
194,
747, 861 (1952)
J. Metals 4, 747, 861 (1952) |
| 1953 | Float Zone (Si) | P. H. Keck and M. J. E. Golay | Signal Corps Engg. Labs, U.S.A. | Phys. Rev. 89, 1297 (1953) |
| 1957 | First homoepitaxial growth of Ge and Si (CVD) | N. N. Sheftal et al | Bull. Acad Sci. USSR, Phys, Ser. 21, 140 (1957) | |
| 1958 | van der Pauw Method | L. van der Pauw | Philips Res. Lab, Netherlands | Philips Res. Rep. 13, 1 (1958) |
| 1960 | Planar Process | J. A. Hoerni | IRE Electron Devices Meet., Washington, D.C. (1960) | |
| 1960 | Si/Si(111) Epitaxial film with controlled thickness and resistance | H. C. Theuerer et al. | Bell Labs, U.S.A. | J. Electronchem
Soc., 107, 29 (1960)
J. Electronchem Soc., 108, 649 (1961) |
| 1960 | Ge/GaAs hetroepitaxial film | J. C. Marinace | IBM J. Res., 4, 248 (1960) | |
| 1969
-72 |
MOCVD (GaAs) – initial studies | H. M. Manasevit
and W. I. Simpson
M. Inoue and K. Asahi |
U.S.A.
Japan |
J. Electrochem.
Soc. 116, 1725 (1969)
Jpn. J. Appl. Phys. 11, 919 (1972) |
| 1971 | Molecular Beam Epitaxy (MBE) | A. Y. Cho | Bell Labs, U.S.A. | J. Vac. Sci.
Technol. 8, S31 (1971)
Appl. Phys. Lett. 19, 467 (1971) |
| 1974 | Deep Level Transient Spectroscopy (DLTS) | D. V. Lang | Bell Labs, U.S.A. | Appl. Phys. Lett. 45, 3023 (1974) |
| 1978 | Modulation Doping | R. Dingle,
H. L. StØ
rmer
A. C. Gossard and W. Wiegmann |
Bell Labs, U.S.A. | Appl. Phys. Lett. 33, 665 (1978) |
| 1982 | Scanning Tunneling Microscope (STM) | G. Binnig,
H. Rohrer, Ch. Gerber,
and E. Weibel |
IBM, Zurich | Appl. Phys. Lett. 40, 178 (1982) |
| 1986 | Atomic Force Microscope (AFM) | G. Binnig,
C. F. Quate and
Ch. Gerber |
Stanford University,
California
IBM, California |
Phys. Rev. Lett. 56, 930 (1986) |
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| 1874 | Metal–Semiconductor
Rectifier
(Cat’s Whisker) |
F. Braun | Germany | Ann. Phys. Chem., 153, 556 (1874) |
| 1883 | First Selenium
Rectifier
(for low frequency a.c. applications) |
C. E. Fritts | New York, U.S.A. | Amer. J. Sci. 26, 465 (1883) |
| 1904 | High frequency a.c. detector for radio waves | J. C. Bose | U.S. Patent 775,840 (1904). | |
| 1927 | Point Contact
Rectifier (Cu and Cu2O)
(used in battery chargers, wireless sets etc.) |
L. O. Grondahl
and P. H. Geiger
|
Germany | Trans. Amer. Inst. Elect. Engrs. 46, 357 (1927) |
| 1927 | Point Contact
Rectifier (Cu and Cu2O)
(used in battery chargers, wireless sets etc.) |
L. O. Grondahl
and P. H. Geiger
|
Germany | Trans. Amer. Inst. Elect. Engrs. 46, 357 (1927) |
| 1930 | MOSFET – proposed | J. E. Lilienfeld | U.S.A. | US Patent 1,747,175 (1930) |
| 1960 | – fabricated | D. Kahng and M. M. Atalla | IRE Solid-State Devices Res. Conf., Pittsburgh, Pa., (1960) | |
| 1942 | Ge ‘blocking’
diode detectors for radar
(Ge instead of PbS used previously) |
K. Lark-Horovitz et al | Purdue University, U.S.A. | U.S. Department
of Defence Project
NDRC Report 14-585 (1946) |
| 1946 | Thermistor | K. Lark-Horovitz et al | Purdue University, U.S.A. | Phys. Rev. 69, 258 (1946) |
| 1948
1950 |
Point Contact
Transistor
Junction Transistor (BJT) – theory – realization |
John Bardeen,
Walter Brattain William Shockley
William Shockley |
Bell Labs, U.S.A. | Phys. Rev.
74,
230 (1948)
Bell Syst. Tech. J., 28, 435 (1949), Phys. Rev. 83, 151 (1951) |
| 1950 | Alloy diode | R. N. Hall and W. C. Dunlap | General Electric (GE) Research Lab, U.S.A. | Phys. Rev. 80, 467 (1950) |
| 1952 | JFET – proposed | W. Shockley | Bell Labs, U.S.A. | Proc. IRE, 40, 1365 (1952) |
| 1953 | – fabricated | G. C. Dacey and I. M. Ross | Proc. IRE, 41, 970 (1953) | |
| 1954 | First Si pn-Junction Solar Cell | D. M. Chapin,
C. S. Fuller and
G. L. Pearson |
Bell Labs, U.S.A. | J. Appl. Phys. 25, 676 (1954) |
| 1955 | GaAs Photocell | R. Gremmelmaier | Z. Naturforsch. 10a, 501 (1955) | |
| 1957 | Tunnel Junction | Leo Esaki | Tokyo Tsushin Kogyo Ltd, Japan | Phys. Rev. 109, 603 (1958) |
| 1958 | First Intigrated Circuit (IC) fabricated | J. C. Kilby | U.S.A. | Electron Devices
ED-23,
664 (1976)
U. S. Patent 3,138,743 (1959) |
| 1962 | GaAs LED | J. I. Pankove and J. E. Berkeyheiser | RCA Lab. Princeton,
U.S.A. |
Proc. IRE, 50, 1976(1962) |
| J. I. Pankove and M. J. Massoulie | Bull. Am. Phys. Soc. 7, 88 (1962) | |||
| 1962 | GaAs laser | R. N. Hall
et al.
M. I. Nathan et al. T. M. Quist et al. |
General Electric
(GE)
Research Lab, U.S.A. IBM, U.S.A. MIT, U.S.A. |
Phys. Rev.
Lett. 9, 366 (1962)
Appl. Phys. Lett. 1, 62(1962) Appl. Phys. Lett. 1, 91 (1962) |
| 1962 | Visible (red) laser action in GaAs1-xPx | N. Holonyak Jr. and S. F. Bevacqua | General Electric Company U.S.A. | Appl. Phys. Lett. 1, 82 (1962) |
| 1963 | Heterojunction laser – proposed | H. Kroemer | Proc. IEEE 51, 1782 (1963) | |
| Zh. I. Alferov and R. F. Kazarinov | Ioffe Physico-Technical Institute, USSR | Inventor’s Certificate No.181737 (1963) | ||
| 1967 | – fabricated | Zh. I. Alferov | Ioffe Physico-Technical Institute, USSR | Fiz. Tekh. Poluprovodn., 1, 436 (1967) |
| 1963
1964 |
Red emitting GaP visible LED | J. W. Allen
et al
H. G. Grimmeiss and H. J. Scholz |
Philips Res. Lab, Aachen, Germany | Solid St. Electron.
6,
95 (1963)
Phys. Lett. 8, 233 (1964) |
| 1964 | CdS:Te visible LED | A. C. Eten and J. H. Haanstra | Philips Research Labs, The Netherlands | Phys. Lett. 11, 97 (1964) |
| 1965 | GaP:N efficient green emission | D. G. Thomas,
J. J. Hopfield and
C. J. Frosch |
Bell Labs, U.S.A. | Phys. Rev. Lett. 15, 857 (1965) |
| 1966 | MESFET – proposed | C. A. Mead | Proc. IEEE, 54, 307 (1966) | |
| 1967 | – fabricated | W. W. Hooper and W. I. Lehrer | Proc. IEEE, 55, 1237 (1967) | |
| 1970 | Room temperature CW semiconductor laser | I. Hayashi,
M. B. Panish, P. W. Foy
and S. Sumski |
Bell Labs, U.S.A. | Appl. Phys. Lett. 17, 109 (1970) |
| 1970 | Charge Coupled Semiconductor Device (CCD) | W. S. Boyle and G.E. Smith | Bell Labs, U.S.A. | Bell Syst.Tech. J., 49, 587 (1970) |
| 1971 | Blue light emission from GaN (MIS diode) | J. I. Pankove et al | RCA Lab, Princeton U.S.A. | RCA Review
32,
383 (1971)
J. Lum. 5, 34 (1972) |
| 1974 | Quantum Well | R. Dingle,
W. Wiegmann and
C. H. Henry |
Bell Labs, U.S.A. | Phys. Rev. Lett. 33, 827 (1974) |
| 1976 | Bulk semiconductor optical modulator | G. E. Stillman | Appl. Phys. Lett. 28, 544 (1976) | |
| 1975
1976 1976 |
Amorphous Silicon
(a-Si)
– n and p-doping – Schottky diode Solar Cell – pn-junction Solar Cell |
W. E. Spear
et al
D. E. Carlson aned C. R. Wronski W. E. Spear et al |
Dundee Univ.,
Scotland
Bell Labs, U.S.A. Dundee Univ., Scotland |
Appl. Phys.
Lett. 17, 1193 (1975)
Appl. Phys. Lett. 28, 671 (1976) Appl. Phys. Lett. 28, 105 (1976) |
| 1978 | Multi-quantum Well (MQW) laser | R. D. Dupuis,
P. D. Dapkus,
N. Holonyak, Jr., E. A. Rezek and R. Chin |
Rockwell Int.,
California
University of Illinois at Urbana-Champaign, U.S.A. |
Appl. Phys. Lett. 32, 295 (1978) |
| 1980 | High-Electron-Mobility Transistor (HEMT) | T. Mimura et al | Fujitsu Labs. Ltd, Japan | Jpn. J. Appl. Phys. 19, L225 (1980) |
| 1984 | QW electroabsorption modulator | T. H. Wood | Bell Labs, U.S.A. | Appl. Phys. Lett. 44, 16 (1984) |
| 1985 | LPE-AlGaAs red LED (Candela Class) | Nishizawa et al | Tokyo University, Japan | J. Appl. Phys. 57, 2210 (1985) |
| 1985 | Self-organized Quantum Dots | L. Goldstein et al | CNET, France | Appl. Phys. Lett. 47, 1099 (1985) |
| 1987 | Coulomb Blockade/ Single Electron Transistor | T. A. Fulton and G. J. Dolan | Bell Labs, U.S.A. | Phys. Rev. Lett. 59, 109 (1987) |
| 1988 | Vertical-Cavity Surface-Emitting Laser (VCSEL) | Iga et al | Tokyo Institute of Technology, Japan | IEEE J. Quantum Electron. 24, 1845 (1988) |
| 1990 | Organic semiconductor LEDs | J. H. Burroughes et al | Cavendish Lab. Cambridge, U.K. | Nature 347, 539 (1990) |
| 1991 | ZnSe blue laser | M. A. Haase et al | 3M Company, Minnesota, U.S.A. | Appl. Phys. Lett. 59, 1272 (1991) |
| 1993 | GaN blue LED | S. Nakamura | Nichia Chemical Ind. Ltd, Japan | Appl. Phys. Lett. 64, 1687 (1994) |
| 1994 | Quantum Cascade Laser | J. Faist et al | Bell Labs, U.S.A. | Science 264, 553 (1994) |
| 1994 | Quantum dot injection laser (InAs/GaAs) | N. Kirstaedter et al | Technical University, Berlin, Germany. | Electron. Lett. 30, 1416 (1994) |
| 1995 | Highest efficiency (24.7%) crystalline Silicon Solar Cell | M. A. Green et al | University of New South Wales, Australia | Appl. Phys. Lett. 66, 3636 (1995) |
| 1995 | SiC high voltage
blocking Devices
- 4.5 kV pn-Junction diode |
O. Kordina et al | Linköping University, Sweden | Appl. Phys. Lett. 67, 1561 (1995) |
| 1998 | - 3kV Schottky barrier diode in 4H-SiC | Q. Wahab et al | Linköping University, Sweden | Appl. Phys. Lett. 72, 445 (1998) |
| 1995 | GaN blue laser | S. Nakamura | Nichia Chemical Ind. Ltd, Japan | Jpn. J. Appl. Phys. 35, L74 (1996) |
| 1997 | Epitaxial Layer Over-growth (ELOG) and 10,000 hour CW GaN blue laser | S. Nakamura | Nichia Chemical Ind. Ltd, Japan | Jpn. J. Appl. Phys. 36, L1568 (1997) |
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