Fig. 3From: Optical engineering of PbS colloidal quantum dot solar cells via Fabry–Perot resonance and distributed Bragg reflectorsa Schematic of DBR-FP device. b Calculated reflectance of DBR-A, DBR-B, DBR-C, and absorption spectra of 200 nm thick PbS in the FP device without a DBR. c Calculated absorption spectra of 200 nm thick PbS in DBR integrated FP devices, and d corresponding normalized absorption enhancement of the devices under AM 1.5G illuminationBack to article page