Advancements in the photovoltaic optimization of a high performance perovskite solar cell based on graphene oxide (GO) hole transport layer DOI
George G. Njema, Joshua K. Kibet,

Silas M. Ngari

и другие.

Next research., Год журнала: 2024, Номер 1(2), С. 100055 - 100055

Опубликована: Ноя. 1, 2024

Язык: Английский

Computational Study of Chalcogenide-Based Perovskite Solar Cell Using SCAPS-1D Numerical Simulator DOI Open Access
Edson L. Meyer,

Sinikiwe A. Mvokwe,

Opeoluwa O. Oyedeji

и другие.

Materials, Год журнала: 2025, Номер 18(1), С. 186 - 186

Опубликована: Янв. 4, 2025

Perovskite solar cells (PSCs) are regarded as extremely efficient and have significant potential for upcoming photovoltaic technologies due to their excellent optoelectronic properties. However, a few obstacles, which include the instability high costs of production lead-based PSCs, hinder commercialization. In this study, performance cell with configuration FTO/CdS/BaZrS3/HTL/Ir was optimized by varying thickness perovskite layer, hole transport temperature, electron layer (ETL)’s defect density, absorber energy band, work function back contact. Various layers (HTLs), including Cu2O, CuSCN, P3HT, PEDOT:PSS, were assessed select best materials that would achieve stability in PSC devices. At optimal levels, PEDOT:PSS reached maximum power conversion efficiency (PCE) 18.50%, while Cu2O exhibited PCE 5.81, 10.73, 9.80%, respectively. The attributed better band alignment between and, thus, low recombination photogenerated charges. other parameters device short-circuit current density (Jsc) 23.46 mA cm−2, an open-circuit voltage (Voc) 8.86 (V), fill factor (FF) 8.90%. This study highlights chalcogenide-based PSCs stable alternative traditional cells, successful optimization paving way future research on eco-friendly scalable methods.

Язык: Английский

Процитировано

2

Advancements in device modelling and impedance analysis of a high performance disilicide (FeSi2)-based perovskite solar cell DOI

A. Elmelouky,

George G. Njema, Joshua K. Kibet

и другие.

Renewable Energy, Год журнала: 2025, Номер unknown, С. 122365 - 122365

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1

Performance optimization of a novel perovskite solar cell with power conversion efficiency exceeding 37% based on methylammonium tin iodide DOI Creative Commons
George G. Njema, Joshua K. Kibet,

Silas M. Ngari

и другие.

Next Energy, Год журнала: 2024, Номер 6, С. 100182 - 100182

Опубликована: Сен. 3, 2024

Язык: Английский

Процитировано

6

A review of novel materials for nano-photocatalytic and optoelectronic applications: recent perspectives, water splitting and environmental remediation DOI
George G. Njema, Joshua K. Kibet

Deleted Journal, Год журнала: 2024, Номер 1(4), С. 100018 - 100018

Опубликована: Сен. 11, 2024

Язык: Английский

Процитировано

5

Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye DOI Creative Commons
George G. Njema, Joshua K. Kibet, Nicholas Rono

и другие.

IET Optoelectronics, Год журнала: 2024, Номер 18(4), С. 96 - 120

Опубликована: Июнь 6, 2024

Abstract Among the emerging photovoltaic technologies, solid‐state dye‐sensitised solar cells (ssDSSCs) have attracted considerable interest due to their cost‐effective production, adjustable characteristics, and potential for lightweight flexible applications. Nevertheless, achieving efficiencies comparable established such as perovskite silicon‐based devices, proven challenging. Herein, device structure, Pt/PEDOT: PSS/N719 dye/PC 61 BM/ITO is investigated theoretically using cell capacitance simulator (SCAPS‐1D). Groundbreaking advancement introduced in ssDSSC design, remarkable theoretical power conversion efficiency of 20.73%, surpassing performance reported traditional dye‐based technologies. The model demonstrates an exceptional Fill factor 86.64%, indicating efficient current collection; along with a modest short‐circuit density ( J sc ) 22.38 mA/cm 2 impressive open‐circuit voltage V oc 1.0691 V, highlighting light absorption charge separation. Mott–Schottky analysis parasitic resistances (series shunt) been thoroughly discussed. Despite fact that only numerical simulation involved, proposed ssDSSCs structure gives insights into fabrication highly can be injected production workflow order advance technology DSSC.

Язык: Английский

Процитировано

4

Numerical Simulation and Hole Transport Layers Optimization of a Lead Sulfide-Based Solar Cell with a Power Conversion Efficiency of Above 22% DOI Open Access
Edson L. Meyer,

Inam Vulindlela,

Athandwe M. Paca

и другие.

Coatings, Год журнала: 2025, Номер 15(3), С. 255 - 255

Опубликована: Фев. 20, 2025

Recently, the numerical simulation of solar cells has attracted tantamount scientific attention in photovoltaic community because it saves on research time and resources before actual fabrication devices laboratories. Despite significant advancements quantum dot-sensitized (QDSSCs), power conversion efficiency (PCE) is still low when compared to other such as perovskite. This gap poses a substantial challenge harnessing full potential QDSSCs for widespread adoption renewable energy applications. Enhancing imperative their commercial viability deployment. In this work, SCAPS-1D was used QDSSCs. The cell with general configuration FTO/TiO2/PbS/HTL/Au investigated. device, PbS dots were inserted absorber layer, TiO2 electron transport layer (ETL), gold back contact, following inorganic materials, i.e., copper (I) iodide (CuI), oxide (Cu2O), cadmium zinc telluride selenide (CZTSe), iron tin sulfide (CFTS), (CZTSSe) tested HTL FTO acted conductive substrate. best material exhibited PCE 22.61%, fill factor (FF) 84.67%, an open circuit voltage (Voc) 0.753 V, current density (Jsc) 35.48 mA cm−2. study contributes field by employing simulations optimize QDSSCs, exploring novel materials these identifying CZTSSe promising low-cost that significantly enhances both performance

Язык: Английский

Процитировано

0

Advanced Modeling and Impedance Spectroscopy analysis of a high performance Perovskite Solar Cell Based on Ag₂MgSnS₄ Photoactive Absorber DOI
George G. Njema,

A. Elmelouky,

Nicholas Rono

и другие.

Materials Research Bulletin, Год журнала: 2025, Номер unknown, С. 113488 - 113488

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Advancements in the photovoltaic optimization of a high performance perovskite solar cell based on graphene oxide (GO) hole transport layer DOI
George G. Njema, Joshua K. Kibet,

Silas M. Ngari

и другие.

Next research., Год журнала: 2024, Номер 1(2), С. 100055 - 100055

Опубликована: Ноя. 1, 2024

Язык: Английский

Процитировано

0