For an estimation of solar cells parameters there used sunlight simulators with different light sources which both on capacity of a light flow and on its spectral structure essentially differ and in different degree correspond to the spectral structure of a standard solar spectrum accepted by the International Electrotechnical Committee [1]. The such kind information is represented rather important for the subsequent interpretation of results of measurements. Filters were choose so that their pass-bands have been in regular intervals distributed in a range of lengths of waves of absorption of a semiconductor material of the solar cell used (mainly silicon).fiugreSpecific density of short circuit currents of calibrated solar cell vs wave length for а) incandescent lamp К=0,71, b) halogen lamp К=0,72, c) light-emitting diode lamp К=0,41, d) luminous tube lamp К=0,37 (2) in comparison with standard spectrum of solar radiation (1).In correspondence with the developed technique the flow of the monochromatic radiation received by means of special optical filters forwarded on preliminary graduated solar element. Obtained dependences of specific density of a short circuit current (i'0λi mA/cm2nm) vs length of a wave in range 0,3- 1,2 microns (curves 1) were compared to the spectrogram received by results of calibration of the solar cell in the conditions of a standard sunlight (curves 2). Results for a number of sources of radiation are received, the part from which is presented in figure. As criterion of degree of conformity of an investigated light source to parametres of a sunlight for АМ 1,5 the ratio of the area common for both spectrograms (shaded) to the full area corresponding to a standard sunlight is accepted. The technique is represented to be very convenient for use in researches of solar cells spectral characteristics. [1]. Bird R.E., Hulstrom. R.L., Lewis L.J. Solar Energy, v.30, №6, 1983. pp.563-573.