MEMBRANE, METHOD FOR PRODUCING THE SAME, AND PHOTOELECTRIC CONVERSION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a method for performing continuous vapor deposition of an organic material, which is not suitable for sublimation purification, for a prolonged period of time in a stable manner without decreasing its purity.

SOLUTION: A membrane is obtained by subjecting an organic material that cannot be purified by sublimation purification to vapor deposition including: using a material for vapor deposition containing the organic material and a compound (A) having a boiling point or sublimation point T1lower than a vapor deposition temperature T3of the organic material; heating the material for vapor deposition by first heating to a temperature T2higher than the boiling point or sublimation point T1of the compound (A) and lower than the vapor deposition temperature T3of the organic material to keep the material at the temperature T2; and after the first heating 1, heating the material for vapor deposition by second heating to a temperature equal to or higher than the evaporation temperature T3of the organic material and equal to or lower than a decomposition temperature of the organic material to keep the material at the temperature.

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