Harnessing solar energy with NH4Cl-doped hole transport layers in inverted perovskite solar cells. (29th March 2023)

• Record Type: Journal Article
• Authors: Iqbal, Sikandar; Chishti, Aadil Nabi; Hussain, Muhammad Bilal; Zaman, Fakhr uz; Qayum, Abdul; Mehmood, Rashid; Zaman, Shahid
• Is Part Of: Materials chemistry frontiers. Volume 7:Number 9(2023)
• Page Start: 1813
• Page End: 1820
• Publication Date: 2023-03-29
• Subjects: Materials science -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1039/d3qm00012e
• Languages: English
• ISSNs: 2052-1529

Abstract

Abstract : NH4 Cl doped with PEDOT: PSS is pprepared with facile and efficient approach demonstrates a superior photovoltaic performance in inverted perovskite solar cells due to enhanced conductivity and light-harvesting ability. Abstract : Inverted perovskite solar cells have received enormous attention due to exceptional photovoltaic performance, yet they are susceptible to hysteresis and low conductivity. Poly 3, 4-ethylenedioxythiophene: Poly 4-styrenesulfonate (PEDOT: PSS) is a widely utilized material in inverted perovskite solar cells as hole transporting layers. However, the low conductivity of the PEDOT: PSS is a significant hurdle toward high power conversion efficiency. Herein, we report an efficient and straightforward approach to modify the intrinsic properties of PEDOT: PSS via doping various amounts of ammonium chloride (NH4 Cl). Systematic observations have explored a significant transformation in the intrinsic properties of NH4 Cl doped PEDOT: PSS, resulting in higher conductivity compared with pristine PEDOT: PSS. The optimized NH4 Cl doped PEDOT: PSS exhibits higher surface roughness which not only improves the contact area between the active layer and the anode layer but also enhances the spectral absorption with a subsequent increase in the light-harvesting ability. As a result, the optimized NH4 Cl doped PEDOT: PSS delivers a superior power conversion efficiency (PCE), an open circuit voltage ( V OC ), a short circuit current density ( J SC ), and a fill factor (FF) of 17.5%, 1.02 V, 26.4 mA cm −1 and 79.7%, respectively. We believe that this study will offer profound insights into the efficient and cost-effective synthesis of high-power conversion efficiency inverted perovskite solar cells.