System and method for sensing image on CMOS

A method for determining color using a CMOS image sensor, wherein the CMOS image sensor includes an n-type substrate and a p-type layer, the p-type layer overlaying the n-type substrate, the method comprising:

• applying a first voltage on the n-type substrate;
• obtaining a first output, the first output being associated with the first voltage;
• applying a second voltage on the n-type substrate;
• obtaining a second output, the second output being associated with the first voltage;
• applying a third voltage on the n-type substrate;
• obtaining a third output, the third output being associated with the first voltage;
• providing a plurality of weighting factors;
• determining a color based on the plurality of weighting factors, the first output, the second output, and the third output.

A method for forming a CMOS image sensing pixel, the CMOS image sensing pixel being configured for determining a color, the method comprising:

• providing an n-type substrate, the n-type substrate including a first thickness and a first width;
• forming a p-type layer, the p-type layer overlaying the n-type substrate, the p-type layer including a second thickness and a second width, the second thickness and the second width being associated with a light characteristic;
• forming an n-type layer, the n-type layer overlaying the p-type layer, the n-type layer including a third thickness and a third width;
• forming a pn junction between the p-type layer and the n-type layer, the pn junction including a fourth width;
• providing a control circuit, the control circuit being electrically coupled to the n-type substrate.

An imaging capturing device comprising:

• a user interface being configured to facilitate an image capturing process;
• a first input being configured to receive a user input, the user input being a command for capturing an image;
• an image sensor being configured to capture an image;
• an optical device being positioned to provide a light to form an image on the image sensor;
• a processor being configured to process images;
• wherein the image sensor comprises:
• an n-type substrate, the n-type substrate including a first width and a first thickness;
• a p-type layer overlying the n-type substrate, the p-type layer including a second width and a second thickness, the second width being associated with one or more characteristics of a colored light;
• an n-type layer overlying the p-type layer, the n-type layer being associated with a third width and a third thickness;
• an pn junction formed between the p-type layer and the n-type layer.