Preparation of Optical Sensor Doped in TEOS

In the preparation of the optical sensor doped in sol-gel, the following three steps were carried out  

The above reported method suffers from some disadvantages which are that cracking takes place on the product and cast optical sensor, which is converted into small 

2 Preparation of Thin Film Nano-Optical Sensor Doped in Sol-Gel Matrix 

In our previous work we prepared the nano-optical sensor by sol-gel method. The disadvantage of the preparation method is that the prepared nano-optical sensor is cracked after calcination process at 500°C. We modified the method of preparation to overcome the cracking process. Firstly, we tried cooling the nano-optical sensor in a refrigerator at 0°C after gel formation without success. Secondly, by addition of a plasticizer (DEDMS) at room temperature, which successfully resulted in avoiding the cracking process and a thin film nano-optical sensor is obtained. 

Synthesis of the optical sensor doped TMOS-DEDMS thin films 

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