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Current density–voltage characteristics of best DSSCs with photoanodes treated by electric field of 0 and 2000 V cm⁻¹ at different sintering temperatures (350, 400, 450 and 500 °C)
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Electric field assisted sintering (EFAS) is one of the interesting technical strategies for enhancing the performance of DSSCs. To this aim, the present study aimed to present an efficient approach for increasing the photovoltaic performance of DSSCs by implementing EFAS procedure at different sintering temperatures (350, 400, 450 and 500 °C). Inte...
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Although chemical bath of TiCl4 treatment has been used to serve as a compact layer for planar perovskite solar cells (PSCs), uneven TiO2 particle sizes and chlorine residual would decrease the device performance. In this study, we modify the TiCl4 treatment process through well-controlled the kinetics grown of TiO2 nanoparticle, leading to a unifo...
Citations
... [22][23][24][25] Additionally, a key factor in achieving high conductivity and sufficient porosity for precursor inltration is proper sintering. [26][27][28] The cathode layer's conductivity and hole extraction are successfully increased by the p-type nanostructured additives (such as NiO, CuS, CuSCN, and CuI) with comparatively high hole mobility. 25,[29][30][31] The introduction of surface B doping and bulk P doping may endow high charge carrier mobility. ...
... 25 In addition, the heteroatom dopinginduced charge redistribution, regardless of a higher (such as N) or lower (such as B, P) electronegativity than that of carbon, could break electroneutrality and enhance the conductivity of carbon. 22,26 In the perovskite layer, carbon-polymer nanocomposites can play various roles. As an example, Rajamanickam et al. reported depositing a graphene-PANI composite on top of the CH 3 NH 3 PbI 3 layer to protect it from degradation. ...
Carbon-based perovskite solar cells (PSCs) have emerged as a hopeful alternative in the realm of photovoltaics. They are considered promising due to their affordability, remarkable durability in humid environments, and impressive electrical conductivity. One approach to address the cost issue is to use affordable counter electrodes in PSCs that do not require organic hole transport materials (HTMs). This study utilized an innovative and economical method to create NiOx/PANI nanocomposites. Later, these nanoparticles were integrated into a carbon paste to act as an HTM. This incorporation is intended to optimize charge extraction, improve interfacial contact, align energy levels, reduce energy loss, minimize charge recombination, and protect the perovskite (FAPbI3) surface from degradation. The optoelectronic properties of these devices were investigated, and all cells showed improved efficiency compared to control cells. The NiOx/PANI doped carbon (NiOx/PANI+CE) exhibited excellent performance due to strong hole conductivity, well-aligned energy levels, and the formation of stepwise band alignment at the perovskite interface.
... Different strategies such as material processing, bilayer engineering, and doping p-type nanoparticles (NPs) can boost efficiency [26][27][28][29]. Furthermore, appropriate sintering plays a prominent role in providing high conductivity with enough porosity for precursor infiltration [30][31][32]. ...
We report the synthesis and application of NiO nanoparticles (NPs) for improving the performance of hole-transport-free carbon-based perovskite solar cells (PSCs). The NiO NPs were prepared by sol-gel method and mixed with commercial and synthesized carbon paste to form NiO-modified carbon electrodes. The effects of calcination temperature and NiO NP concentration on the electrical conductivity and electrochemical properties of the carbon electrodes were investigated. The NiO NP doping enhanced the hole extraction and reduced the charge recombination at the perovskite–carbon interface, leading to increased current and voltage in the PSCs. The best power conversion efficiency of 8.6% was obtained by incorporating NiO NP-doped synthesized carbon paste as the cathode, which was significantly higher than that of the PSCs without NiO NP doping. This research provides a simple and effective strategy to improve the performance of hole-transport-free carbon-based PSCs by using NiO NPs as an additive in the carbon electrodes.
Organic Photo Voltaic cells such as dye sensitized solar cells (DSSC) are bringing about a revolution in the sustainable field. Better economic feasibility and decent efficiencies make it more eminent amongst the available products in the market. Reliability of these cells becomes an area of concern as environmental and electrical energy parameters wobble dynamically. The research article focuses on new techniques for observing the lifetime of a DSSC experiencing the impact of warning parameters like light source temperature, frequency, humidity and thermal stresses on working factors of DSSC such as Fill Factor, voltage, current and Efficiency. Optimization of prediction of failure for lifetime of the cell is done by Design of Experiment (DOE) methodology based on Taguchi’s model using Minitab 18.1 software. The health condition of fabricated dye sensitized solar cells (DSSC) is monitored using Accelerated life testing as well as analytical method. Analysis shows that the mean lifetime of the fabricated dye sensitized solar cells (DSSC) using the experimental method and analytical method is 18 488.67 h and 22 167.05 h respectively. The error analysis shows that the analytical method has 3.63% error, which confirms its accuracy as 96.37%.
Third generation nanostructure-based solar cells such as dye-sensitized solar cells (DSSCs) are green and low-cost future substitute for silicon-based solar cells. Zinc Stannate-based DSSCs are attractive due to their interesting properties, but aggregated Zn2SnO4 nanoparticles are large in comparison to TiO2 nanoparticles which deteriorate DSSC performance. Electric field assisted sintering (EFAS) due to its outstanding impacts on optical and electrical characteristics is favorable. To this aim, we try to study the enhancement effect of EFAS on the performance of Zn2SnO4-based DSSCs. EFAS could manipulate nanostructure matrix remarkably to develop the effective surface area to gather higher amounts of dye molecules resulting enhanced light harvesting and improved current density further; this method helps to improve electron transportation by decreasing recombination probability. The reported strategy is applicable in numerous electro-optical devices including nanoporous medium such as perovskite solar cells.
