Rana, Aniket and Gupta, Neeraj and Lochan, Abhiram and Sharma, G. D. and Chand, Suresh and Kumar, Mahesh and Singh, Rajiv K. (2016) Charge carrier dynamics and surface plasmon interaction in gold nanorod-blended organic solar cell. Journal of Applied Physics, 120 (6). 063102-1-063102-11. ISSN 0021-8979

PDF - Published Version Restricted to Registered users only Download (2259Kb) | Request a copy

Abstract

The inclusion of plasmonic nanoparticles into organic solar cell enhances the light harvesting properties that lead to higher power conversion efficiency without altering the device configuration. This work defines the consequences of the nanoparticle overloading amount and energy transfer process between gold nanorod and polymer (active matrix) in organic solar cells. We have studied the hole population decay dynamics coupled with gold nanorods loading amount which provides better understanding about device performance limiting factors. The exciton and plasmon together act as an interacting dipole; however, the energy exchange between these two has been elucidated via plasmon resonance energy transfer (PRET) mechanism. Further, the charge species have been identified specifically with respect to their energy levels appearing in ultrafast time domain. The specific interaction of these charge species with respective surface plasmon resonance mode, i.e., exciton to transverse mode of oscillation and polaron pair to longitudinal mode of oscillations, has been explained. Thus, our analysis reveals that PRET enhances the carrier population density in polymer via non-radiative process beyond the concurrence of a particular plasmon resonance oscillation mode and polymer absorption range. These findings give new insight and reveal specifically the factors that enhance and control the performance of gold nanorods blended organic solar cells. This work would lead in the emergence of future plasmon based efficient organic electronic devices.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s AIP Publishing.
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	16 Nov 2017 07:43
Last Modified:	16 Nov 2017 07:43
URI:	http://npl.csircentral.net/id/eprint/2160

Actions (login required)

View Item