Simulated bending test analysis of 23% efficient lead-free flexible perovskite solar cell with different bending states

Abstract

Perovskite solar cells (PSCs) have emerged as a promising technology for developing highly efficient and low-cost photovoltaic (PV) devices. However, toxicity is the primary limiting factor that is restraining the use of traditional PSCs. Therefore, lead-free PSCs have been considered the best alternative due to lead toxicity and environmental impact. The secondary obstacle hindering the potential of PSCs for wearable applications is their limited flexibility. Therefore, lead-free flexible PSC (F-PSC) device is designed and simulated through the Silvaco-TCAD tool in this work. Despite the significant advancements made in F-PSCs, insufficient research is conducted to examine their performance under different bending states to study the reliability of the device’s flexibility. Here, three different bending states have been reported to investigate the proposed device performance, viz. convex, concave, and sinusoidal. The impact of bending radius (BR) in convex and concave from 5 to 20 mm and bending amplitude (BA) in the sinusoidal state from 0.5 to 2 mm is studied and analyzed to optimize the device performance. The performance of the proposed lead-free F-PSC is explored in terms of the current density (JV) curve, PV parameters, and external quantum efficiency (EQE). Optimized PV parameters of the proposed F-PSC are: short-circuit current density (JSC) of 33.45 mA cm−2, open-circuit voltage (VOC) of 0.925 V, fill factor (FF) of 77.15% and PCE of 23.87%. The findings of the reported study would significantly provide a path for the development of F-PSC.

Analysing the suitability of CaTiO3/Ca1–xSrxTiO3/SrTiO3 perovskite for fabrication of optoelectronic devices using QuantumATK tool: a study for electronic and optical properties

“…Its insulating properties, essential for electronic applications, are the result of its large value of band gap [11,12]. CaTiO 3 is useful in capacitors and other electrical devices due to its high dielectric constant [13][14][15]. Doping and structural changes may further be used to control its dielectric constant value which has been reported to be altered from 100 to 180 [16,17].…”

Performance enhancement of CsPbI3-xBrx perovskite solar cells via graded bandgap and affinity engineering

“…At present, the majority of the world's energy requirements are met by fossil fuel-based sources, but their reserves are depleting at an accelerated rate due to increased energy consumption. To overcome these challenges and meet the increasing energy demands, it is necessary to develop sustainable energy options [9][10][11][12]. Among these, renewable energy resources i.e., solar energy offer a solution to tackle this substantial demand without inflicting harm on our planet and harnessed through photovoltaic (PV) cells for direct electricity conversion stands out as the most abundant renewable energy source [13][14][15][16][17][18].…”