Influence of active layer thickness on the performance of organic photovoltaics with light trapping

Inche Ibrahim, Mohd Lukman and Hassan, Husna Amira (2019) Influence of active layer thickness on the performance of organic photovoltaics with light trapping. IEEE Transactions on Electron Devices, 66 (7). pp. 3124-3128. ISSN 0018-9383 E-ISSN 1557-9646

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Abstract

To maximize the performance of a photovoltaic device, light trapping is necessary. In this paper, we theoretically investigate the effect of active layer thickness on the performance of organic photovoltaic (OPV) cells with ideal light trapping. Although actual light trapping schemes are not ideal, this paper can still be useful in guiding us in maximizing the performance of actual OPVs with light trapping. The effect of active layer thickness on the power conversion efficiency (PCE), short-circuit current, open-circuit voltage, and fill factor (FF) of OPVs with ideal light trapping is described in this paper. For a low-recombination-loss OPV with ideal light trapping, the active layer thickness weakly affects the PCE. For a high-recombination-loss OPV with ideal light trapping, the active layer thickness strongly affects the PCE and must be very thin (around 10 nm) in order to maximize the PCE. Therefore, this paper shows that it is important for OPVs to have a low recombination loss so that the active layer thickness does not become a hindrance or an additional factor in creating highly efficient light trapping schemes that can maximize the PCE. This paper also shows that it is equally (if not more) important to develop light trapping schemes that are highly efficient at very thin active layers (around 10 nm) so that the PCE of any OPVs can be more or less maximized, whether the OPVs have low or high recombination losses.

Item Type:	Article (Journal)
Additional Information:	7410/72712
Uncontrolled Keywords:	—Carrier recombination, diffusion current, light trapping, organic solar cell, power conversion efficiency (PCE)
Subjects:	Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896 Production of electricity by direct energy conversion T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Science
Depositing User:	Dr Mohd Lukman Inche Ibrahim
Date Deposited:	19 Jun 2019 08:27
Last Modified:	25 Nov 2019 00:19
URI:	http://irep.iium.edu.my/id/eprint/72712

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