DEVICE FOR MEASURING THE TURBIDITY OF A SOLUTION FOR BEING USED IN THE CHEMICAL BATH DEPOSITION IN A PROCESS OF MANUFACTURING A COOPER-INDIUM-GALLIUM-SELENIDE THIN FILM SOLAR CELL

摘要

PURPOSE: A device for measuring the turbidity of a solution for being used in the chemical bath deposition is provided to measure, in real time, the turbidity of a high temperature solution that is used in the chemical bath deposition, thereby accurately determining the change point of the solution.;CONSTITUTION: A device for measuring the turbidity of a solution for being used in the chemical bath deposition includes a medicinal fluid withdrawal conduit line and a turbidity measurement means (11). The turbidity measurement means includes a flow rate control valve (15), a flow rate detection meter (17), an illumination unit (19), a light receiving unit (21), and a blower (25). The flow rate control valve is installed in the medicinal fluid withdrawal conduit line, and is controlled by a control unit (13). The flow rate detection meter is installed in the medicinal fluid withdrawal conduit line and arranged apart from the flow rate control valve at the fixed distance, and transfers the flow rate, which is detected by flow rate detection meter, to the control unit. The illumination unit irradiates the medicinal fluid passing through the medicinal fluid withdrawal conduit line thought a light transmissive hole (3a). The light receiving unit receives the light reflected through the light transmissive hole and transfers the input light amount to the control unit.;COPYRIGHT KIPO 2013;[Reference numerals] (13) Control unit