Stabilizing heterostructures of soft perovskite semiconductors

Science ◽  
2019 ◽  
Vol 365 (6454) ◽  
pp. 687-691 ◽  
Author(s):  
Yanbo Wang ◽  
Tianhao Wu ◽  
Julien Barbaud ◽  
Weiyu Kong ◽  
Danyu Cui ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Oxide Layer ◽  
Perovskite Solar Cells ◽  
Charge Carriers ◽  
Solution Processing ◽  
Processing Strategy ◽  
Maximum Power Point ◽  
Output Efficiency ◽  
Power Point

Here we report a solution-processing strategy to stabilize the perovskite-based heterostructure. Strong Pb–Cl and Pb–O bonds formed between a [CH(NH2)2]x[CH3NH3]1−xPb1+yI3 film with a Pb-rich surface and a chlorinated graphene oxide layer. The constructed heterostructure can selectively extract photogenerated charge carriers and impede the loss of decomposed components from soft perovskites, thereby reducing damage to the organic charge-transporting semiconductors. Perovskite solar cells with an aperture area of 1.02 square centimeters maintained 90% of their initial efficiency of 21% after operation at the maximum power point under AM1.5G solar light (100 milliwatts per square centimeter) at 60°C for 1000 hours. The stabilized output efficiency of the aged device was further certified by an accredited test center.

scholarly journals Chemical anti-corrosion strategy for stable inverted perovskite solar cells

2020 ◽  
Vol 6 (51) ◽  
pp. eabd1580
Author(s):  
Xiaodong Li ◽  
Sheng Fu ◽  
Wenxiao Zhang ◽  
Shanzhe Ke ◽  
Weijie Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Electrochemical Corrosion ◽  
Metal Electrodes ◽  
Maximum Power Point ◽  
Perovskite Layer ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Organic Corrosion Inhibitor ◽  
Power Point

One big challenge for long-lived inverted perovskite solar cells (PSCs) is that commonly used metal electrodes react with perovskite layer, inducing electrode corrosion and device degradation. Motivated by the idea of metal anticorrosion, here, we propose a chemical anticorrosion strategy to fabricate stable inverted PSCs through introducing a typical organic corrosion inhibitor of benzotriazole (BTA) before Cu electrode deposition. BTA molecules chemically coordinate to the Cu electrode and form an insoluble and polymeric film of [BTA-Cu], suppressing the electrochemical corrosion and reaction between perovskite and the Cu electrode. PSCs with BTA/Cu show excellent air stability, retaining 92.8 ± 1.9% of initial efficiency after aging for 2500 hours. In addition, >90% of initial efficiency is retained after 85°C aging for over 1000 hours. PSCs with BTA/Cu also exhibit good operational stability, and 88.6 ± 2.6% of initial efficiency is retained after continuous maximum power point tracking for 1000 hours.

scholarly journals Benefit from Photon Recycling at the Maximum-Power Point of State-of-the-Art Perovskite Solar Cells

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Roberto Brenes ◽  
Madeleine Laitz ◽  
Joel Jean ◽  
Dane W. deQuilettes ◽  
Vladimir Bulović
Keyword(s):  
Solar Cells ◽  
State Of The Art ◽  
Perovskite Solar Cells ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Power Point ◽  
Photon Recycling

scholarly journals Methylammonium Lead Tri-Iodide Perovskite Solar Cells with Varying Equimolar Concentrations of Perovskite Precursors

2021 ◽  
Vol 11 (24) ◽  
pp. 11689
Author(s):  
Mritunjaya Parashar ◽  
Anupama B. Kaul
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Thin Film Deposition ◽  
Solvent Mixture ◽  
Film Deposition ◽  
Solution Processing ◽  
Lead Iodide ◽  
Deposition Processes ◽  
Power Point

During recent years, power conversion efficiencies (PCEs) of organic-inorganic halide perovskite solar cells (PSCs) have shown remarkable progress. The emergence of various thin film deposition processes to produce perovskite films, notably using solution processing techniques, can be credited in part for this achievement. The engineering of chemical precursors using solution processing routes is a powerful approach for enabling low-cost and scalable solar fabrication processes. In the present study, we have conducted a systematic study to tune the equimolar precursor ratio of the organic halide (methylammonium iodide; MAI) and metal halide (lead iodide; PbI2) in a fixed solvent mixture of N,N-dimethylformamide (DMF):dimethylsulfoxide (DMSO). The surface morphology, optical characteristics, and crystallinity of the films produced with these four distinct solutions were investigated, and our analysis shows that the MAI:PbI2 (1.5:1.5) film is optimal under the current conditions. The PSCs fabricated from the (1.5:1.5) formulation were then integrated into the n-i-p solar cell architecture on fluorine-doped tin oxide (FTO) substrates, which exhibited a PCE of ~14.56%. Stability testing on this PSC device without encapsulation at 29 °C (ambient temperature) and 60% relative humidity (RH) under one-sun illumination while keeping the device at its maximum power point showed the device retained ~60% of initial PCE value after 10 h of continuous operation. Moreover, the recombination analysis between all four formulations showed that the bimolecular recombination and trap-assisted recombination appeared to be suppressed in the more optimal (1.5:1.5) PSC device when compared to the other formulations used in the n-i-p PSC architecture.

Enhanced long-term stability of perovskite solar cells by 3-hydroxypyridine dipping

2017 ◽  
Vol 53 (11) ◽  
pp. 1829-1831 ◽  
Author(s):  
Rui Fu ◽  
Yicheng Zhao ◽  
Qi Li ◽  
Wenke Zhou ◽  
Dapeng Yu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Term Stability ◽  
Long Term Stability ◽  
Power Point

With 3-HP treatment, perovskite solar cells can give a steady and long-term output at maximum power point for more than 50 hours.

Improved Efficiency of Perovskite Solar Cells Using a Nitrogen-Doped Graphene-Oxide-Treated Tin Oxide Layer

2019 ◽  
Vol 12 (2) ◽  
pp. 2417-2423 ◽  
Author(s):  
Ji A Hong ◽  
Eui Dae Jung ◽  
Jae Choul Yu ◽  
Dae Woo Kim ◽  
Yun Seok Nam ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Oxide Layer ◽  
Tin Oxide ◽  
Perovskite Solar Cells ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Mixed (5-AVA)xMA1−xPbI3−y(BF4)y perovskites enhance the photovoltaic performance of hole-conductor-free printable mesoscopic solar cells

2018 ◽  
Vol 6 (5) ◽  
pp. 2360-2364 ◽  
Author(s):  
Yusong Sheng ◽  
Anyi Mei ◽  
Shuang Liu ◽  
Miao Duan ◽  
Pei Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solution Processing ◽  
Processing Strategy ◽  
Mixed Cation ◽  
One Step

We report on a simple one-step solution processing strategy to fabricate new stable mixed cation/mixed halide (5-AVA)xMA1−xPbI3−y(BF4)y perovskite solar cells.

Reliable Performance Comparison of Perovskite Solar Cells Using Optimized Maximum Power Point Tracking (Solar RRL 2∕2019)

Solar RRL ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 1970024
Author(s):  
Lucija Rakocevic ◽  
Felix Ernst ◽  
Nadine T. Yimga ◽  
Saumye Vashishtha ◽  
Tom Aernouts ◽  
...  
Keyword(s):  
Solar Cells ◽  
Maximum Power Point Tracking ◽  
Perovskite Solar Cells ◽  
Performance Comparison ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Reliable Performance ◽  
Power Point

Inducing swift nucleation morphology control for efficient planar perovskite solar cells by hot-air quenching

2017 ◽  
Vol 5 (8) ◽  
pp. 3812-3818 ◽  
Author(s):  
Seulki Song ◽  
Maximilian T. Hörantner ◽  
Kyoungwon Choi ◽  
Henry J. Snaith ◽  
Taiho Park
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Morphology Control ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Perovskite Layer ◽  
Nucleation Stage ◽  
Hot Air ◽  
Power Point

We introduce a pin-hole free CH3NH3PbI3−xClx perovskite layer by using heated airflow during the nucleation stage. We control the nucleation stage which gives a pin-hole free planar perovskite with large grains, resulting in a maximum power point (MPP) efficiency of 14.3% and a high efficiency of 19.0% with reproducibility.

Reliable Performance Comparison of Perovskite Solar Cells Using Optimized Maximum Power Point Tracking

Solar RRL ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 1800287 ◽  
Author(s):  
Lucija Rakocevic ◽  
Felix Ernst ◽  
Nadine T. Yimga ◽  
Saumye Vashishtha ◽  
Tom Aernouts ◽  
...  
Keyword(s):  
Solar Cells ◽  
Maximum Power Point Tracking ◽  
Perovskite Solar Cells ◽  
Performance Comparison ◽  
Maximum Power ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Reliable Performance ◽  
Power Point
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