NOVELTY - A varnish containing a ground substance of an organic compound, an oligomer or a polymer, dissolved in a solvent containing good solvent and poor solvent, is new. Molecular weight of organic compound and oligomer or polymer is 200-1000 and 200-500000, respectively. Boiling point of the poor solvent is at least 20 degreesC lower than that of the good solvent.    USE - For thin film such as charge transportable thin film used as positive hole injection layer or hole-transport layer of organic electroluminescent element (all claimed) and for capacitor electrode protective film, antistatic film, organic film for gas sensor, temperature sensor, humidity sensor, biosensor, secondary battery, fuel cell, solar cell and polymer battery, electromagnetic shielding film, gas barrier film, ultraviolet absorption film, optical information recording medium and optical integrated circuit.    ADVANTAGE - The varnish is manufactured easily using organic solvent, which does not contains water. The varnish efficiently provides uniform charge transportable thin film having high planarization property, reliability, short-circuit preventing effect and reproducibility, without generation of foreign material on film surface, at high yield. The thin film economically provides organic electroluminescent element having high lifetime, light emission characteristics and current efficiency without display defects, at high productivity.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) charge transportable varnish, which consists of charge transportable organic material, and electron accepting dopant substance or hole accepting dopant substance, the organic material consists of charge transportable monomer, charge transportable oligomer having number average molecular weight of 200-500000, or polymer;    (2) thin film, which is formed using the varnish;    (3) charge transportable thin film, which is formed using the charge transportable varnish;    (4) organic electroluminescent element, which has the charge transportable thin film;    (5) preparing thin film, which involves using the varnish; and    (6) preparing charge transportable thin film, comprising using the charge transportable varnish.