DIRECT AND WAVELENGTH MODULATED PHOTOCONDUCTIVITY AND PHOTOVOLTAÏC EXCITATION SPECTRA OF CuGaS2 P. ROCHON, E. FORTIN, J. P. ZIELINGER et C. SCHWAB J. Phys. Colloques, 36 C3 (1975) C3-67-C3-71 DOI: 10.1051/jphyscol:1975313