scholarly journals Evaluation of Active Layer Thickness Influence in Long-Term Stability and Degradation Mechanisms in CsFAPbIBr Perovskite Solar Cells

2021 ◽  
Vol 11 (24) ◽  
pp. 11668
Author(s):  
Mari Carmen López-González ◽  
Gonzalo del Pozo ◽  
Diego Martín-Martín ◽  
Laura Muñoz-Díaz ◽  
José Carlos Pérez-Martínez ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Layer Thickness ◽  
Active Layer ◽  
Perovskite Solar Cells ◽  
Low Frequency ◽  
Strong Increase ◽  
Active Layer Thickness ◽  
Internal Electric Field ◽  
Ion Density

Perovskite solar cells (PSCs) have become very popular due to the high efficiencies achieved. Nevertheless, one of the main challenges for their commercialization is to solve their instability issues. A thorough understanding of the processes taking place in the device is key for the development of this technology. Herein, J-V measurements have been performed to characterize PSCs with different active layer thicknesses. The solar cells’ parameters in pristine devices show no significant dependence on the active layer thickness. However, the evolution of the solar cells’ efficiency under ISOS-L1 protocol reveals a dramatic burn-in degradation, more pronounced for thicker devices. Samples were also characterized using impedance spectroscopy (IS) at different degradation stages, and data were fitted to a three RC/RCPE circuit. The low frequency capacitance in the thickest samples suffers a strong increase with time, which suggests a significant growth in the mobile ion population. This increase in the ion density partially screens the electric field, which yields a reduction in the extracted current and, consequently, the efficiency. This paper has been validated with two-dimensional numerical simulations that corroborate (i) the decrease in the internal electric field in dark conditions in 650 nm devices, and (ii) the consequent reduction in the carrier drift and, therefore, of the effective current extraction and efficiency.

Active layer thickness effect on the recombination process of PCDTBT:PC71BM organic solar cells

2013 ◽  
Vol 14 (1) ◽  
pp. 74-79 ◽  
Author(s):  
Gon Namkoong ◽  
Jaemin Kong ◽  
Matthew Samson ◽  
In-Wook Hwang ◽  
Kwanghee Lee
Keyword(s):  
Solar Cells ◽  
Layer Thickness ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Recombination Process ◽  
Thickness Effect ◽  
Active Layer Thickness

Engineering Polymer Solar Cells: Advancement in Active Layer Thickness and Morphology

2021 ◽  
Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Maimur Hossain ◽  
Mohammad Adil Afroz ◽  
Dibashmoni Kalita ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Layer Thickness ◽  
Active Layer ◽  
Conversion Efficiency ◽  
High Power ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Active Layer Thickness ◽  
High Power Conversion Efficiency

Achieving high power conversion efficiency (PCE) polymer solar cells (PSCs) has been very challenging and the ultimate goal for their commercialization. Precise investigation of the active layer morphology and newer...

Regulating active layer thickness and morphology for high performance hot-casted polymer solar cells

2020 ◽  
Vol 8 (24) ◽  
pp. 8191-8198
Author(s):  
Ritesh Kant Gupta ◽  
Rabindranath Garai ◽  
Mohammad Adil Afroz ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Layer Thickness ◽  
Active Layer ◽  
High Performance ◽  
Carrier Mobility ◽  
Polymer Solar Cells ◽  
Active Layer Thickness ◽  
Casting Technique ◽  
High Performance Polymer

Fabrication of high performance polymer solar cells through the hot-casting technique, which modulates the thickness and roughness of the active layer and also the carrier mobility of the solar cell devices.

Large active layer thickness toleration of high-efficiency small molecule solar cells

2015 ◽  
Vol 3 (44) ◽  
pp. 22274-22279 ◽  
Author(s):  
Qian Zhang ◽  
Bin Kan ◽  
Xiangjian Wan ◽  
Hua Zhang ◽  
Feng Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Layer Thickness ◽  
Active Layer ◽  
Small Molecule ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Thickness Dependence ◽  
Active Layer Thickness ◽  
Conversion Efficiencies

The thickness dependence of the photovoltaic performance for devices based on the small molecule DR3TSBDT:PC71BM was systematically investigated and the power conversion efficiencies are found to be relatively insensitive to the thickness.

The impact of active layer thickness on low-frequency noise characteristics in InZnO thin-film transistors with high mobility

2012 ◽  
Vol 100 (17) ◽  
pp. 173501 ◽  
Author(s):  
Hyun-Sik Choi ◽  
Sanghun Jeon ◽  
Hojung Kim ◽  
Jaikwang Shin ◽  
Changjung Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Layer Thickness ◽  
Active Layer ◽  
Thin Film Transistors ◽  
Low Frequency ◽  
High Mobility ◽  
Active Layer Thickness ◽  
Frequency Noise ◽  
Noise Characteristics ◽  
The Impact

scholarly journals TCO and back contact buffer significance to achieve highest open circuit voltage and efficiency of CdTe solar cells

2021 ◽  
Author(s):  
Bablu K. Ghosh ◽  
Ismail Saad ◽  
Khairul A Mahmood
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Layer Thickness ◽  
Active Layer ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Electrical Performance ◽  
Active Layer Thickness ◽  
Back Contact ◽  
Interface Layers

Abstract CdTe thin film (TF) solar cells are most promising in commercial stage photovoltaic (PV) technologies. Cell contacts and interface defects related opto-electrical losses are still vital to limit its further technological benefit. Thin film PV cells voltage and fill factor loss lessening purpose carrier selective back contact selection with band matching interface layers are essential. Beside that buffer and active layer thickness selection is vital for field assisted selective carrier collection. The suitable emitter or buffer layer thickness and band gap matching to the active layer is potential to lessen parasitic absorption and shallow recombination loss. In this purpose SCAPS software based ZnO and SnO2 TCO as well as CdS and CdSe buffer impact are numerically analyzed. The TCO, emitter, back surface field layer and metal contacts effects on electrical performance is studied. In the model, TCO and back contact barrier thickness is shown significant to progress electrical performance. Eventually, open circuit voltage Voc = 0.9757 V and 19.92% efficiency is achieved for 90 nm of ZnTe BSF with ZnO TCO and CdS emitter layer of optimized thickness.

scholarly journals Charge carrier transport and contact selectivity limit the operation of PTB7-based organic solar cells of varying active layer thickness

2013 ◽  
Vol 1 (39) ◽  
pp. 12345 ◽  
Author(s):  
Antonio Guerrero ◽  
Núria F. Montcada ◽  
Jon Ajuria ◽  
Ikerne Etxebarria ◽  
Roberto Pacios ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Layer Thickness ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Carrier Transport ◽  
Active Layer Thickness ◽  
Charge Carrier Transport

An Investigation into Electric Field-Modulated Photoluminescence of Perovskite solar cells

MRS Advances ◽  
2017 ◽  
Vol 2 (53) ◽  
pp. 3099-3104
Author(s):  
Zhihua Xu
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Perovskite Solar Cells ◽  
Internal Electric Field ◽  
Ion Migration ◽  
Migration Mechanism ◽  
Halide Perovskites ◽  
Mobile Ions ◽  
Voltage Scanning

ABSTRACTElectric field-modulated photoluminescence (PL) of perovskite solar cells is investigated to gain deeper insight about the role of the mobile ions in organometal halide perovskites. The PL intensity of perovskite solar cells show significant dependence on the polarity of the external electric field and the voltage scanning direction. This phenomenon is discussed in the framework of an ion migration mechanism, which has been widely accounted for the current density-voltage (J-V) hysteresis in perovskite solar cells. The result suggests that the mobile ions not only change the internal electric field of perovskite solar cells, but also have an effect on the recombination of photogenerated charge carriers.

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