65. A.V. Shah, J. Hubin,
"Closed-form Approximation for Internal Field and free Carrier Densities in a p-i-n Amorphous Solar Cell",
Proceedings of the 4th International Photovoltaic Science and Engineering Conference, Sydney, February 1989, Vol. 1, pp. 271-276;

66. H. Berner, G. Kragler, J. Meier, E. Bucher, H. Curtins, A. Shah,
"The Influence of Oxide Growth and Etching Procedures on the Density of Surface States of a-Si:H",
Proceedings of the 4th International Photovoltaic Science and Engineering Conference, Sydney,1989, Vol. 2, pp. 679-684;

67. Y.Ziegler, H. Curtins, J. Baumann, A.V. Shah
"VHF-GD a-Si:H. Films Prepared at Very Low Temperature",
Proceedings of the MRS Symp., San Diego, 1989, Vol. 149, pp. 81-86;

68. B. Leutz, H. Keppner, V. Viret, D. Fischer, E. Sauvain., A.V. Shah,
"High Rate Deposition of a-Si:H Films for Optoelectronic Detectors by VHF-GD", Proceedings of the 1st International Conference on Amorphous Semiconductor Technology (ICAST), Asheville, August 1989, published in Journal of Non-Crystalline Solids,1989, vol. 115, pp. 93-95;

69. A.V. Shah, E. Sauvain, J. Hubin,
"Characteristic Lengths for Transport in Illuminated Intrinsic a-Si:H",
Proceedings of the 13th International Conference on Amorphous and Liquid Semiconductors (ICALS), Asheville, August 1989, published in Journal of Non-Crystalline Solids, 1989, vol. 114, pp. 402-404;

70. M. Favre, H. Curtins, M. Vanecek,
"Light Scattering Effects in CPM and PDS Measurements on a-Si:H films",
Proceedings of the13th International Conference on Amorphous and Liquid Semiconductors (ICALS), Asheville, August 1989, published in Journal of Non-Crystalline Solids,1989, vol. 114, pp.405-407;

71. D. Fischer,.R. Tscharner, Y. Ziegler, H. Keppner, A.V. Shah,
"Amorphous Silicon Solar Cells fabricated by High Deposition Rate VHF Glow Discharge Process",
Proceedings of the 9th EC Photovoltaic Solar Energy Conference, Freiburg, September 1989, pp. 995-997;

72. G. Kragler, H. Berner, J. Meier, K. Löble, E. Bucher, H.Curtins
"Ellipsometric and Photoemission Studies of Oxidized and Etched a-Si:H Surfaces", Proceedings of the 9th EC Photovoltaic Solar Energy Conference, Freiburg, September 1989, pp. 1013-1016;

73. J. Meier, H. Berner, M.Simon, G. Kragler, E. Bucher , H. Keppner, Y. Ziegler, H. Curtins, A. V. Shah,
"Open Circuit Voltage Enhancement by Passivation of a-Si:H Surfaces",
published in theThird International Conference on Surface Modification Technologies, Neuchâtel, 1989, pp. 841-844 ;

75. K. Prasad, F. Finger, H. Curtins, A. Shah, J. Bauman
"Preparation and Characterization of Highly Conductive (100 S/cm) Phosphorus Doped µc-Si:H Films deposited using the VHF-GD Technique",
Proceedings of the MRS Symp., Boston, November 1989, Vol. 164, pp 27-32

74. J. Hubin, E. Sauvain, A. V. Shah
"Characteristic Lengths for Steady-State Transport in Illuminated, Intrinsic a-Si:H", Special issue (Dec. 89) of the IEEE Transactions on Electronic Devices, 1989, Vol. 36, pp. 2789-2797;

82. J. Sopka, U. Schneider, B. Schröder, M. Favre, F. Finger, H. Oechsner,
"The Influence of the Film-Substrate Interface on the Defect Density and Other Properties of Sputter-Deposited Amorphous Hydrogenated Silicon",
Special issue (Dec. 89) of the IEEE Transactions on Electronic Devices, 1989,Vol. 36, pp. 2848-2852;