scholarly journals Interfacial Modification of Mesoporous TiO2 Films with PbI2-Ethanolamine-Dimethyl Sulfoxide Solution for CsPbIBr2 Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 962 ◽  
Author(s):  
Xianwei Meng ◽  
Kailin Chi ◽  
Qian Li ◽  
Yu Cao ◽  
Gengxin Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dimethyl Sulfoxide ◽  
Contact Area ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Step Method ◽  
Dimethyl Sulfoxide Solution ◽  
Interfacial Modification ◽  
One Step ◽  
The One

As one of the most frequently-used electron-transporting materials, the mesoporous titanium dioxide (m-TiO2) film used in mesoporous structured perovskite solar cells (PSCs) can be employed for the scaffold of the perovskite film and as a pathway for electron transport, and the contact area between the perovskite and m-TiO2 directly determines the comprehensive performance of the PSCs. Because of the substandard interface combining quality between the all-inorganic perovskite CsPbIBr2 and m-TiO2, the development of the mesoporous structured CsPbIBr2 PSCs synthesized by the one-step method is severely limited. Here, we used a solution containing PbI2, monoethanolamine (EA) and dimethyl sulfoxide (DMSO) (PED) as the interfacial modifier to enhance the contact area and modify the m-TiO2/CsPbIBr2 contact characteristics. Comparatively, the performance of the solar device based on the PED-modified m-TiO2 layer has improved considerably, and its power conversion efficiency is up to 6.39%.

scholarly journals Influence of Solution Deposition Process on Modulating Majority Charge Carrier Type and Quality of Perovskite Thin Films for Solar Cells

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2494 ◽  
Author(s):  
Chuangchuang Chang ◽  
Xiaoping Zou ◽  
Jin Cheng ◽  
Tao Ling ◽  
Yujun Yao ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Deposition Process ◽  
Step Method ◽  
Perovskite Layer ◽  
Majority Carrier ◽  
One Step ◽  
The One

In the past ten years, extensive research has witnessed the rapid development of perovskite solar cells (PSCs) and diversified preparation processing craft. At present, the most widely used methods of preparing perovskite solar cells are the one-step method and the two-step method. The main work of this paper is to study the effect of the solution deposition process on the quality of perovskite thin films, as well as modulating majority charge carrier types. Perovskite film was prepared in air by designing different processes, which were then adequately analyzed with corresponding methods. It was demonstrated that the preparation process plays a crucial role in modulating the type of majority carrier and in achieving high-quality perovskite thin film. The one-step prepared perovskite layer is enriched in MA+, leading to a P type majority carrier type thin film. The two-step prepared perovskite layer is enriched in Pb2+, leading to a N type majority carrier type thin film. In addition, we found that the one-step method caused PbI2 residue due to component segregation, which seriously affects the interface and film quality of the perovskite layer. This work aims to modulate the majority carrier type of perovskite film through different preparation processes, which can lay the foundation for the study of homojunction perovskite solar cells to improve the device performance of PSCs.

Efficient planar-heterojunction perovskite solar cells achieved via interfacial modification of a sol–gel ZnO electron collection layer

2014 ◽  
Vol 2 (41) ◽  
pp. 17291-17296 ◽  
Author(s):  
Junghwan Kim ◽  
Geunjin Kim ◽  
Tae Kyun Kim ◽  
Sooncheol Kwon ◽  
Hyungcheol Back ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Interfacial Engineering ◽  
Electron Collection ◽  
Interfacial Modification ◽  
New Strategy ◽  
Planar Heterojunction ◽  
Conversion Efficiencies

The importance of interfacial engineering as a new strategy for improving the power conversion efficiencies (PCEs) of planar-heterojunction (PHJ) perovskite solar cells is highlighted by incorporating sol–gel ZnO modified with PCBM.

Thiocyanate assisted performance enhancement of formamidinium based planar perovskite solar cells through a single one-step solution process

2016 ◽  
Vol 4 (24) ◽  
pp. 9430-9436 ◽  
Author(s):  
Shida Yang ◽  
Wenqing Liu ◽  
Lijian Zuo ◽  
Xinqian Zhang ◽  
Tao Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Perovskite Solar Cells ◽  
Solution Process ◽  
Step Method ◽  
One Step

Thiocyanate ammonium additives are found to improve the performance of FAPbI3 based planar perovskite solar cells through a single one-step method.

Charge Transport Layer Doping Influence on Perovskite CH3NH3PbI3-xClx Solar Cell Performance

2018 ◽  
Vol 762 ◽  
pp. 249-254
Author(s):  
Anastasia Ivanova ◽  
Kristina Lebedeva ◽  
Andrey Tokmakov ◽  
Modris Roze ◽  
Igors Kaulachs
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Step Method ◽  
Shunt Resistance ◽  
Solar Cell Performance ◽  
One Step ◽  
Active Research

Organometal hybrid trihalide perovskite solar cells (PSCs) have emerged a new class of optoelectronic devices for various applications. PSCs have demonstrated unprecedented progress in efficiency reaching certified power conversion efficiency 22.1% after only several years of active research. In this paper, we demonstrate inverted planar mixed halide perovskite solar cells where perovskite layers are built by two-step modified interdifussion and one-step methods. We demonstrate how PSC parameters change by doping electron transport layer (ETL). We used N,N-dimethyl-N-octadecyl (3-aminopropyl) trimethoxysilyl chloride (DMOAP) as dopant for ETL [6,6]-phenyl C61butyric acid methyl ester (PCBM). The highest EQE and Vocvalues were obtained for cell prepared by one-step method with fast crystallization and doped ETL but higher fill factor (FF) and shunt resistance (Rshunt) values were obtained for cells prepared by two-step method with undoped ETL.

scholarly journals Influence of the Preparation Method on Planar Perovskite CH3NH3PbI3-xClx Solar Cell Performance and Hysteresis

2017 ◽  
Vol 54 (4) ◽  
pp. 58-68
Author(s):  
A. Ivanova ◽  
A. Tokmakov ◽  
K. Lebedeva ◽  
M. Roze ◽  
I. Kaulachs
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Hole Transport ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Step Method ◽  
Solar Cell Performance ◽  
One Step

Abstract Organometal halide perovskites are promising materials for lowcost, high-efficiency solar cells. The method of perovskite layer deposition and the interfacial layers play an important role in determining the efficiency of perovskite solar cells (PSCs). In the paper, we demonstrate inverted planar perovskite solar cells where perovskite layers are deposited by two-step modified interdiffusion and one-step methods. We also demonstrate how PSC parameters change by doping of charge transport layers (CTL). We used dimethylsupoxide (DMSO) as dopant for the hole transport layer (PEDOT:PSS) but for the electron transport layer [6,6]-phenyl C61 butyric acid methyl ester (PCBM)) we used N,N-dimethyl-N-octadecyl(3-aminopropyl)trimethoxysilyl chloride (DMOAP). The highest main PSC parameters (PCE, EQE, VOC) were obtained for cells prepared by the one-step method with fast crystallization and doped CTLs but higher fill factor (FF) and shunt resistance (Rsh) values were obtained for cells prepared by the two-step method with undoped CTLs.

Ionic liquid-assisted perovskite crystal film growth for high performance planar heterojunction perovskite solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97848-97852 ◽  
Author(s):  
Yangyang Wan ◽  
Sujuan Dong ◽  
Yaling Wang ◽  
Liying Yang ◽  
Wenjing Qin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
High Performance ◽  
Film Growth ◽  
Perovskite Solar Cells ◽  
Crystal Film ◽  
One Step ◽  
Perovskite Crystal ◽  
The One ◽  
Planar Heterojunction

Ionic liquid, 1-ethylpyridinium chloride with a relative low melting point of 100 °C is used to control the morphological growth of CH3NH3PbI3 during the one-step deposition method for preparing efficient planar heterojunction perovskite solar cells.

scholarly journals Antisolvent with an Ultrawide Processing Window for the One-Step Fabrication of Efficient and Large-Area Perovskite Solar Cells

2018 ◽  
Vol 30 (49) ◽  
pp. 1802763 ◽  
Author(s):  
Pengjun Zhao ◽  
Byeong Jo Kim ◽  
Xiaodong Ren ◽  
Dong Geon Lee ◽  
Gi Joo Bang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Large Area ◽  
Processing Window ◽  
One Step ◽  
The One

Planar perovskite solar cells with 15.75% power conversion efficiency by cathode and anode interfacial modification

2015 ◽  
Vol 3 (25) ◽  
pp. 13533-13539 ◽  
Author(s):  
Min Qian ◽  
Meng Li ◽  
Xiao-Bo Shi ◽  
Heng Ma ◽  
Zhao-Kui Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Ag Nps ◽  
Interfacial Modification

Ag NPs and Bphen modified anode and cathode interfaces result in a PCE of 15.75% in perovskite solar cells.

scholarly journals Controlled Growth of Porous InBr3: PbBr2 Film for Preparation of CsPbBr3 in Carbon-Based Planar Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2408
Author(s):  
Kailin Chi ◽  
Hansi Xu ◽  
Bingtao Feng ◽  
Xianwei Meng ◽  
Daoyu Yu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Absorption ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Absorption Capacity ◽  
Step Method ◽  
Low Solubility ◽  
Planar Carbon ◽  
Carbon Based

Due to the low solubility of CsBr in organic solvents, the CsPbBr3 film prepared by the multi-step method has holes and insufficient thickness, and the light absorption capacity and current density of the perovskite film hinder the further improvement in the power conversion efficiency (PCE) of CsPbBr3 solar cells. In this study, we introduced InBr3 into the PbBr2 precursor solution and adjusted the concentration of PbBr2, successfully prepared PbBr2 with a porous structure on the compact TiO2 (c-TiO2) substrate to ensure that it fully reacted with CsBr, and obtained the planar carbon-based CsPbBr3 solar cells with high-quality perovskite film. The results reveal that the porous PbBr2 structure and the increasing PbBr2 concentration are beneficial to increase the thickness of the CsPbBr3 films, optimize the surface morphology, and significantly enhance the light absorption capacity. Finally, the PCE of the CsPbBr3 solar cells obtained after conditions optimization was 5.76%.

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