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Enhanced Charge Carrier Dynamics and...

Laskar, Md. Ashiqur Rahman.

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Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt./
Author:	Laskar, Md. Ashiqur Rahman.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	80 p.
Notes:	Source: Masters Abstracts International, Volume: 82-03.
Contained By:	Masters Abstracts International82-03.
Subject:	Electrical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27960769
ISBN:	9798664761795

Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt.
Laskar, Md. Ashiqur Rahman.

Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 80 p.

Source: Masters Abstracts International, Volume: 82-03.

Thesis (M.S.)--South Dakota State University, 2020.

This item must not be sold to any third party vendors.

In the last few years, active research works on hybrid perovskite solar cells (HPSCs) have been going on throughout the world as a part of clean energy revolution. HPSCs have already proved their potentiality as future solar technology through their promising photovoltaic performances and ability for low temperature based solution processing. Nevertheless, still there are remaining challenges of better charge carrier dynamics and defects minimization in HPSCs. Overcoming these challenges are very important to achieve high power conversion efficiency (PCE) practically. Aiming this, a novel organic halide salt called Phenylhydrazinium Iodide (PHAI) is introduced as additive with CH3NH3PbI3 perovskite precursor in this study. Incorporation of a very small amount of PHAI causes significant enhancement of charge carrier dynamics in HPSCs resulting ~15% increase of device's short circuit current density. In addition, PHAI treatment helps to reduce perovskite grain boundary defects more than 0.5 times than the pristine CH3NH3PbI3 HPSCs. This reduction in defects contributes to minimize the non-radiative recombination of photogenerated charge carriers. Consequently, overall 20% improvement in PCE is achieved through PHAI additive treatment providing ~18% efficient CH3NH3PbI3 inverted hybrid perovskite solar cells. Besides, PHAI treated HPSCs exhibit superior ambient stability than the pristine devices in unencapsulated condition.

ISBN: 9798664761795Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Additive material

Enhanced Charge Carrier Dynamics and Defects Passivation in Hybrid Perovskite Solar Cell Using a Novel Organic Halide Salt.
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500 $a Source: Masters Abstracts International, Volume: 82-03.
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520 $a In the last few years, active research works on hybrid perovskite solar cells (HPSCs) have been going on throughout the world as a part of clean energy revolution. HPSCs have already proved their potentiality as future solar technology through their promising photovoltaic performances and ability for low temperature based solution processing. Nevertheless, still there are remaining challenges of better charge carrier dynamics and defects minimization in HPSCs. Overcoming these challenges are very important to achieve high power conversion efficiency (PCE) practically. Aiming this, a novel organic halide salt called Phenylhydrazinium Iodide (PHAI) is introduced as additive with CH3NH3PbI3 perovskite precursor in this study. Incorporation of a very small amount of PHAI causes significant enhancement of charge carrier dynamics in HPSCs resulting ~15% increase of device's short circuit current density. In addition, PHAI treatment helps to reduce perovskite grain boundary defects more than 0.5 times than the pristine CH3NH3PbI3 HPSCs. This reduction in defects contributes to minimize the non-radiative recombination of photogenerated charge carriers. Consequently, overall 20% improvement in PCE is achieved through PHAI additive treatment providing ~18% efficient CH3NH3PbI3 inverted hybrid perovskite solar cells. Besides, PHAI treated HPSCs exhibit superior ambient stability than the pristine devices in unencapsulated condition.
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