Textured CH3NH3PbI3 thin film with enhanced stability for high performance perovskite solar cells

Nano Energy ◽  
2017 ◽  
Vol 33 ◽  
pp. 485-496 ◽  
Author(s):  
Mingzhu Long ◽  
Tiankai Zhang ◽  
Houyu Zhu ◽  
Guixia Li ◽  
Feng Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Enhanced Stability

High-performance mixed-dimensional perovskite solar cells with enhanced stability against humidity, heat and UV light

2018 ◽  
Vol 6 (41) ◽  
pp. 20233-20241 ◽  
Author(s):  
Haiying Zheng ◽  
Guozhen Liu ◽  
Xiaojing Chen ◽  
Bing Zhang ◽  
Ahmed Alsaedi ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Uv Light ◽  
Perovskite Solar Cells ◽  
Light Stability ◽  
Enhanced Stability

By introducing HOCH2CH2NH3I, new MD perovskite solar cells with a high PCE of 18.79% and improved humidity, heat and UV light stability are obtained.

scholarly journals Direct Observation of Long Electron-Hole Diffusion Distance in CH3NH3PbI3 Perovskite Thin Film

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Yu Li ◽  
Weibo Yan ◽  
Yunlong Li ◽  
Shufeng Wang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Diffusion Distance ◽  
Transfer Layer ◽  
Electron Hole ◽  
Direct Support ◽  
Short Diffusion Distance

Abstract In high performance perovskite based solar cells, CH3NH3PbI3 is the key material. We carried out a study on charge diffusion in spin-coated CH3NH3PbI3 perovskite thin film by transient fluorescent spectroscopy. A thickness-dependent fluorescent lifetime was found. By coating the film with an electron or hole transfer layer, [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) or 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) respectively, we observed the charge transfer directly through the fluorescence quenching. One-dimensional diffusion model was applied to obtain long charge diffusion distances in thick films, which is ~1.7 μm for electrons and up to ~6.3 μm for holes. Short diffusion distance of few hundreds of nanometer was also observed in thin film. This thickness dependent charge diffusion explained the formerly reported short charge diffusion distance (~100 nm) in films and resolved its confliction to thick working layer (300–500 nm) in real devices. This study presents direct support to the high performance perovskite solar cells and will benefit the devices’ design.

A linear D–π–A based hole transport material for high performance rigid and flexible planar organic–inorganic hybrid perovskite solar cells

2019 ◽  
Vol 7 (43) ◽  
pp. 13440-13446 ◽  
Author(s):  
Haeun Kwon ◽  
Saripally Sudhaker Reddy ◽  
Veera Murugan Arivunithi ◽  
Hyunjung Jin ◽  
Ho-Yeol Park ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Flexible Substrates ◽  
Solution Processed ◽  
Inorganic Hybrid ◽  
New Class ◽  
Hybrid Perovskite ◽  
Enhanced Stability

A new class of HTM is designed by introducing the D–π–A approach. Dopant-free TPA-BP-OXD based solution processed planar i-PSCs on rigid and flexible substrates show PCEs of 15.46% and 12.90%, respectively, and the hysteresis is negligible with enhanced stability.

scholarly journals Improving the Morphology of the Perovskite Absorber Layer in Hybrid Organic/Inorganic Halide Perovskite MAPbI3 Solar Cells

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
I. J. Ogundana ◽  
S. Y. Foo
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Perovskite Layer ◽  
Large Variability

Recently, perovskite solar cells have attracted tremendous attention due to their excellent power conversion efficiency, low cost, simple fabrications, and high photovoltaic performance. Furthermore, the perovskite solar cells are lightweight and possess thin film and semitransparency. However, the nonuniformity in perovskite layer constitutes a major setback to the operation mechanism, performance, reproducibility, and degradation of perovskite solar cells. Therefore, one of the main challenges in planar perovskite devices is the fabrication of high quality films with controlled morphology and least amount of pin-holes for high performance thin film perovskite devices. The poor reproducibility in perovskite solar cells hinders the accurate fabrication of practical devices for use in real world applications, and this is primarily as a result of the inability to control the morphology of perovskites, leading to large variability in the characteristics of perovskite solar cells. Hence, the focus of research in perovskites has been mostly geared towards improving the morphology and crystallization of perovskite absorber by selecting the optimal annealing condition considering the effect of humidity. Here we report a controlled ambient condition that is necessary to grow uniform perovskite crystals. A best PCE of 7.5% was achieved along with a short-circuit current density of 15.2 mA/cm2, an open-circuit voltage of 0.81 V, and a fill factor of 0.612 from the perovskite solar cell prepared under 60% relative humidity.

scholarly journals High-performance Wide Bandgap Perovskite Solar Cells Fabricated in Ambient High-Humidity Conditions

2021 ◽  
Author(s):  
Ugur Deneb Menda ◽  
Guilherme Ribeiro ◽  
Daniela Nunes ◽  
Tomás Calmeiro ◽  
Hugo Águas ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
State Of The Art ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Wide Bandgap ◽  
High Humidity ◽  
Halide Perovskite ◽  
Lead Halide

Lead-halide perovskite solar cells (PSCs) are currently the most promising emergent thin-film photovoltaic technology, having already reached power conversion efficiency (PCE) levels of state-of-the-art wafer-based silicon cells. The class of...

scholarly journals Performance-Enhancing Sulfur-Doped TiO2 Photoanodes for Perovskite Solar Cells

2022 ◽  
Vol 12 (1) ◽  
pp. 429
Author(s):  
Muhazri Abd Mutalib ◽  
Norasikin Ahmad Ludin ◽  
Mohd Sukor Su’ait ◽  
Matthew Davies ◽  
Suhaila Sepeai ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Electron Transport ◽  
Conduction Band ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Dense Layer ◽  
Doped Tio2

High-performance electron transport layer (ETL) anode generally needs to form a uniform dense layer with suitable conduction band position and good electron transport properties. The TiO2 photoanode is primarily applied as the ETL because it is low-cost, has diverse thin-film preparation methods and has good chemical stability. However, pure TiO2 is not an ideal ETL because it lacks several important criteria, such as low conductivity and conduction band mismatch with compositional-tailored perovskite. Thus, TiO2 is an inefficient photo-anode or ETL for high-performance perovskite devices. In this study, sulfur as dopant in the TiO2 photo-anode thin film is used to fabricate solid-state planar perovskite solar cells in relatively high humidity (40–50%). The deposited S-doped thin film improves the power conversion efficiency (PCE) of the device to 6.0%, with the un-doped TiO2 producing a PCE of 5.1% in the best device. Improvement in PCE is due to lower recombination and higher photocurrent density, resulting in 18% increase in PCE (5.1–6.0%).

Conjugated molecule based 2D perovskites for high-performance perovskite solar cells

2021 ◽  
Vol 9 (38) ◽  
pp. 21910-21917
Author(s):  
Tao Zhu ◽  
Lening Shen ◽  
Hanlin Chen ◽  
Yongrui Yang ◽  
Luyao Zheng ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Conjugated Molecules ◽  
Conjugated Molecule

Perovskite solar cells formed from a 2D/3D bilayer perovskite thin film, where 2D perovskites were created by novel conjugated molecules, exhibited a power conversion efficiency of 21.98% and a dramatically boosted stability was demonstrated.

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