Abstract
In this work, CdSe nanocrystals crosslinking by m-phenylenediamine (MPD) was used as an effective method for improving charge transport and enhancing the performance of CdSe/Poly(3-Hexylthiophene) (P3HT) hybrid solar cell. Fourier transform infrared (FTIR) spectra were used to illustrate the crosslinking process by diamine treatment. Binding of MPD molecules to the nanocrystals surface and replacement of initial ligands (pyridine and oleic acid) during MPD treatment were detected by FTIR. The result of nanocrystals treatment with MPD was a 30% power conversion efficiency (PCE) improvement by enhancement of short circuit current density (Jsc) from 5.4 to 6mA/cm2, open circuit voltage (Voc) from 0.7 to 0.76V, and fill factor (FF) from 0.4 to 0.43. The Jsc improvement was attributed to the nanocrystals bridging and charge transport enhancement. Besides, the recombination reduction and charge lifetime enhancement after MPD treatment were the reasons of Voc increase. AFM images showed that the morphology of hybrid active layer did not change noticeably with MPD treatment. Quantum dots (QDs) crosslinking maked the hybrid film resistant to dissolution and flaking in solvents such as dichlorobenzene which provides the fabrication of multilayers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
