Catalytic metal-induced crystallization of sol–gel metal oxides for high-efficiency flexible perovskite solar cells

2018 ◽  
Vol 6 (34) ◽  
pp. 16450-16457 ◽  
Author(s):  
Cheng-Hung Hou ◽  
Jing-Jong Shyue ◽  
Wei-Fang Su ◽  
Feng-Yu Tsai
Keyword(s):  
Low Temperatures ◽  
High Efficiency ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Metal Oxide Films ◽  
High Quality ◽  
Metal Induced Crystallization ◽  
Catalytic Metal ◽  
Induced Crystallization ◽  
Quality Metal

A novel c-MIC mechanism is discovered, enabling solution-based fabrication of high-quality metal oxide films at low temperatures.

scholarly journals Affordable and sustainable new generation of solar cells: calcium titanate (CaTiO3) - based perovskite solar cells

2018 ◽  
Vol 67 ◽  
pp. 01010
Author(s):  
Alfonsina Abat Amelenan Torimtubun ◽  
Anniza Cornelia Augusty ◽  
Eka Maulana ◽  
Lusi Ernawati
Keyword(s):  
Solar Cells ◽  
Power Efficiency ◽  
High Efficiency ◽  
Heating Temperature ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Calcium Titanate ◽  
Open Circuit ◽  
Raw Material ◽  
Lead Free

Indonesia is located along the equator lines with the high intensity of solar radiation averaging about 4.5 kWh of electrical energy/day. This potential leads to the selfsustaining energy possibility fulfilling the electricity needs. Due to their unique electronic structures and high-cost merit over the existing commercial PV technologies, perovskite solar cells (PSCs) have emerged as the next-generation photovoltaic candidate. Their highest power efficiency can be achieved of up to 22.1% in the last 5-6 years. However, this high efficiency came from CH3NH3PbI3 materials which contain lead, a toxic material. Herein calcium titanate (CT) as a lead-free perovskite material were synthesized through sintering of calcium carbonate (CaCO3) and titanium oxide (TiO2) by the sol-gel method. CT powders were characterized by SEM, XRF, FTIR and XRD then applied it onto the mesoporous heterojunction PSCs, with a device architecture ITO/TiO2/CaTiO3/C/ITO. By manipulating the raw material stoichiometry and heating temperature in the synthesis of CaTiO3, the device shows the highest power conversion efficiency (PCE) of 2.12%, shortcircuit current density (JSC) of 0.027 mA cm-2, open circuit voltage (VOC) of 0.212 V and fill factor (FF) of 53.90%. This sample can be an alternative way to create lead-free, largescale, and low-cost perovskite solar cells.

scholarly journals Surface Treatment on Nickel Oxide to Enhance the Efficiency of Inverted Perovskite Solar Cells

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Kaijie Wang ◽  
Ye Tian ◽  
Heng Jiang ◽  
Meng Chen ◽  
Shuangyan Xu
Keyword(s):  
Surface Treatment ◽  
High Efficiency ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Ozone Treatment ◽  
Lower Efficiency ◽  
Low Temperature Annealing ◽  
High Absorption Coefficient ◽  
Uv Ozone

The organic-inorganic hybrid perovskites such as CH3NH3PbI3 have been considered as one of the most promising candidates for the next-generation photovoltaic materials due to its high absorption coefficient, low exciton binding energy, and long diffusion length. Herein, we have chosen NiOx as the hole transport material because metal oxides exhibit robust properties in air. We synthesized the NiOx film by a common sol-gel method. It is found that high-temperature annealing (500°C) is required to ensure the perovskite solar cell (PSC) with an efficiency over 15%. Low-temperature annealing (100°C) cannot convert the precursor materials to fully covered NiOx film, while the PSC based on mediate-temperature annealing (300°C) NiOx has larger resistance and thus lower efficiency. Fortunately, we have found that UV-ozone treatment on the NiOx film can reduce the resistance of the device based on 300°C annealed NiOx. The champion device can reach 16% efficiency with UV-ozone-treated 300°C annealed NiOx. This work has made it possible to reduce the annealing temperature of the sol-gel NiOx for high-efficiency PSCs, and it is believed that this simple surface treatment can be further employed in other metal oxide-based optoelectronic devices.

High-efficiency preparation of high-quality YBCO superconducting films using an ultralow-fluorine sol–gel method

2014 ◽  
Vol 74 (1) ◽  
pp. 249-255 ◽  
Author(s):  
Yuanqing Chen ◽  
Xiaoru Yin ◽  
Yi Feng ◽  
Weibai Bian ◽  
Mengjuan Li ◽  
...  
Keyword(s):  
High Efficiency ◽  
Sol Gel ◽  
Superconducting Films ◽  
High Quality ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ybco Superconducting Films

Two-step sequential blade-coating of high quality perovskite layers for efficient solar cells and modules

2020 ◽  
Vol 8 (17) ◽  
pp. 8447-8454 ◽  
Author(s):  
Junwen Zhang ◽  
Tongle Bu ◽  
Jing Li ◽  
Hengyi Li ◽  
Yanping Mo ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Coating Process ◽  
High Quality ◽  
Blade Coating

A two-step sequential blade-coating process in air to fabricate high-efficiency perovskite solar cells and modules.

scholarly journals Hot-Casting Large-Grain Perovskite Film for Efficient Solar Cells: Film Formation and Device Performance

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Kejun Liao ◽  
Chengbo Li ◽  
Lisha Xie ◽  
Yuan Yuan ◽  
Shurong Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Film Formation ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Deposition Process ◽  
Precursor Chemistry ◽  
High Quality ◽  
Factors Affecting ◽  
Casting Technique

AbstractOrganic–inorganic metal halide perovskite solar cells (PSCs) have recently been considered as one of the most competitive contenders to commercial silicon solar cells in the photovoltaic field. The deposition process of a perovskite film is one of the most critical factors affecting the quality of the film formation and the photovoltaic performance. A hot-casting technique has been widely implemented to deposit high-quality perovskite films with large grain size, uniform thickness, and preferred crystalline orientation. In this review, we first review the classical nucleation and crystal growth theory and discuss those factors affecting the hot-casted perovskite film formation. Meanwhile, the effects of the deposition parameters such as temperature, thermal annealing, precursor chemistry, and atmosphere on the preparation of high-quality perovskite films and high-efficiency PSC devices are comprehensively discussed. The excellent stability of hot-casted perovskite films and integration with scalable deposition technology are conducive to the commercialization of PSCs. Finally, some open questions and future perspectives on the maturity of this technology toward the upscaling deposition of perovskite film for related optoelectronic devices are presented.

Efficient perovskite solar cells with negligible hysteresis achieved by sol–gel-driven spinel nickel cobalt oxide thin films as the hole transport layer

2019 ◽  
Vol 7 (24) ◽  
pp. 7288-7298 ◽  
Author(s):  
Ju Ho Lee ◽  
Young Wook Noh ◽  
In Su Jin ◽  
Sang Hyun Park ◽  
Jae Woong Jung
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Sol Gel ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Critical Issue ◽  
Hole Transport ◽  
Transport Layer ◽  
Hole Transport Layer ◽  
Current Voltage

Current–voltage hysteresis is a critical issue that impacts the photovoltaic performance of perovskite solar cells, and thus, it is imperative to develop high-efficiency perovskite solar cells without hysteresis behavior.

scholarly journals Improved Photovoltaic Performance of CsPbI2Br Perovskite Films via Bivalent Metal Chloride Doping

2021 ◽  
Vol 9 ◽  
Author(s):  
Hong Wei Qiao ◽  
Mengjiong Chen ◽  
Ziren Zhou ◽  
Qilin Cheng ◽  
Yu Hou ◽  
...  
Keyword(s):  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Metal Chloride ◽  
High Quality ◽  
Bivalent Metal ◽  
Inorganic Perovskite ◽  
Chloride Salts ◽  
Defect Densities

Cesium-based all-inorganic perovskite absorbers have attracted increasing attention due to their superior thermal stability, compared to their organic–inorganic counterparts. Up to now, it is a challenge to fabricate high-efficiency all-inorganic perovskite solar cells (PSCs) with low defect densities. Herein, we used bivalent metal chloride salts (SrCl2 and NiCl2) to optimize CsPbI2Br films. The experimental results indicate that this method could deliver high-quality films with improved electronic property. As a result, the champion device based on the 0.01 M SrCl2–doped CsPbI2Br film achieved a power conversion efficiency (PCE) of 16.07% with a high open voltage (VOC) of 1,322 mV, which is about 18% higher than that of the pristine device.

scholarly journals Ambient processed (110) preferred MAPbI3 thin films for highly efficient perovskite solar cells

2021 ◽  
Vol 3 (7) ◽  
pp. 2056-2064
Author(s):  
Rui Guo ◽  
Biplav Dahal ◽  
Arun Thapa ◽  
Yuba Raj Poudel ◽  
Yunyan Liu ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Crystal Orientation ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Highly Efficient

A methylamine-gas-mediated perovskite precursor resulted in high-quality MAPbI3 films featuring a (110) preferred crystal orientation. Planar PSC devices fabricated using the MA-gas-mediated precursor showed a high efficiency of 19.28%.

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