Page 511 - AWSAR 2.0

on the ratio of Co and Pt atoms in the starting CoPt, we can modulate the amount of Co and Pt remaining in the CdS after dual doping. This is how we have achieved dual doping (co- existence of different species)
that is reproducible and consistent, and it can further be extended to different Kirkendall pairs.
Now, what is the need
for doing this? By doing dual doping, we are able to tailor the properties of these CdS semiconductor hosts
as a result of the interaction between different dopants and dopants with the host. This is technically important
for introducing properties that are otherwise not present in the CdS host. Over and above that, these materials have applications in light-emitting diodes, photodetectors, optoelectronics, photovoltaics, etc.
Ms. Mahima Makkar || 487
Now, the readers who are attending to this research story of dual doping, please cast your mind back to the story of “The Jungle Book,” the tale of baby Mowgli being raised by the
family of wolves. The point to put down here is that although different species were together in the same environment, even so, it all commenced when Mowgli was a baby. They have grown together and survived together in a constrained environment of a jungle. And that is what we have understood for our systems as well! The dual doping was successful when we started with CoPt core, overcoated it with a thick CdS matrix, and allowed the CoPt core to disintegrate and diffuse out into the CdS shell under the influence of lattice strain and high–temperature annealing, as shown in the second part of
the scheme.
Now, the readers who are attending to this research story of dual doping, please cast your mind back to the story of “The Jungle Book,” the tale of baby Mowgli being raised by the family of wolves. The point to put down here is that although different species were together in the same environment, even so, it all commenced when Mowgli was a baby.
Cartoon depicting traditional doping and diffusion doping using Kirkendall effect....