02049nas a2200157   4500008004100000245011700041210006900158260000800227300001600235490000700251520144300258100001901701700002201720700001901742856013001761       2009                        eng d00aHybrid core-shell nanoparticles: photoinduced electron-transfer for charge separation and solar cell application0 aHybrid coreshell nanoparticles photoinduced electrontransfer for  cOCT  a5292–52990 v213 a<p>We report growth and formation of hybrid core−shell nanoparticle systems, where photoinduced electron-transfer takes place from the II−VI semiconducting core to an organic shell. With the hybrid core−shell nanoparticles, we fabricate devices so that the photoinduced electron-transfer can finally yield photocurrent and result photovoltaic solar cells. Formation of an organic shell-layer on CdSe nanoparticles is supported by electronic absorption spectroscopy. Electron-transfer from the nanoparticle in the core to a number of organic molecules in the shell is established from quenching of photoluminescence intensity of CdSe nanoparticles as well as from a change in the lifetime of photoluminescence emission. Devices based on the hybrid core−shell nanoparticles in a suitable hole-transporting layer with two dissimilar metal electrodes show efficient photovoltaic performance. Here, following the electron-transfer, electrons flow through the organic molecules and holes, left in the nanoparticles, move through the hole-transporting polymer to the opposite electrodes to yield photovoltaic short-circuit current. The role of CdSe nanoparticles in light-harvesting and charge-generation has been substantiated by control experiments with ZnS nanoparticles in the core. In ZnS-based hybrid core−shell systems, photovoltaic performance is low since photoinduced electron-transfer does not occur from ZnS to the dye.</p>1 aGuchhait, Asim1 aRath, Arup, Kumar1 aPal, Amlan, J.  uhttps://library.ncl.res.in/content/hybrid-core-shell-nanoparticles-photoinduced-electron-transfer-charge-separation-and-solar