HW1. ECE280. There are 3 devices. Each of them has been blended with PCBM at 1:2 donor: acceptor ratio:
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There are 3 devices. Each of them has been blended with PCBM at 1:2 donor: acceptor ratio:
- SWIR polymer (OC12=CDT-Fl-QxC8) without camphoric anhydrate (CA) additive
- SWIR polymer with CA additive
- Visible wavelength polymer (PCE10) Show the calculations and compile your plots in ppt for all the questions. Remember to label axes and explain what you did. Support your claims with plots. (10 points for each question)
- Find the power conversion efficiency. The input light intensity and device areas are given in the spreadsheet file.
- Find external quantum efficiency. The input light is dependent on the monochromator, and the input light power can be calculated from the reference signal in the spreadsheet.
- Find the shunt resistance in the devices and estimate the thermal noise.
- What is the effect of the CA additive? Support your claims with values/plots.
- How does the detectivity (signal-to-noise ratio) compare between the polymers? Support your claims with values. Assume thermal noise is dominant.
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