NOVELTY - A composition comprises compound (I), and material chosen from fatty acid amide, polyalkylene glycol compound, and organic filler.    USE - Composition is used for manufacturing semiconductor substrate for element used for solar cell (all claimed).    ADVANTAGE - The composition has excellent storage stability and coating-film uniformity, and forms desired-shaped passivation layer by simple method. The semiconductor substrate with passivation layer has excellent passivation effect. The solar cell element which has semiconductor substrate has excellent conversion efficiency.    DETAILED DESCRIPTION - A composition comprises metallic compound of formula: M(OR1)m (I), and material chosen from fatty acid amide, polyalkylene glycol compound, and organic filler.    M=metallic element chosen from niobium, tantalum, vanadium, yttrium or hafnium;    R1=1-8C alkyl or 6-14C aryl;and    m=1-5.    INDEPENDENT CLAIMS are included for the following:    (1) semiconductor substrate (1), which has passivation layer (6) provided on the whole surface or portion on the semiconductor substrate;    (2) manufacture of semiconductor substrate, which involves providing passivation layer formed using composition on the whole surface or portion of the semiconductor substrate, and heat-processing;    (3) solar cell element, which has semiconductor substrate to which pn junction of p-type layer and n-type layer are joined, and electrode positioned on p-type layer and/or n-type layer;    (4) manufacture of solar cell element, which involves joining p-type layer and n-type layer in the pn junction, providing passivation layer on the surface semiconductor substrate, forming composition layer on one or more layers chosen from group which consists of p-type layer and n-type layer, and heat-processing; and    (5) solar cell, which has wiring material provided on the electrode of the solar cell element.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view explaining manufacturing solar cell element.    Semiconductor substrate (1)    Diffused layers (2,4)    Anti-reflective film (3)    Back surface electrodes (5)    Passivation layer (6)    Light-receiving surface electrodes (7)