scholarly journals Improving the photovoltaic performance of planar heterojunction perovskite solar cells by mixed solvent vapor treatment

RSC Advances ◽  
2018 ◽  
Vol 8 (21) ◽  
pp. 11574-11579 ◽  
Author(s):  
Binbin Yuan ◽  
Suling Zhao ◽  
Zheng Xu ◽  
Dandan Song ◽  
Bo Qiao ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Solar Cells ◽  
Mixed Solvent ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solvent Vapor ◽  
Planar Heterojunction ◽  
Vapor Treatment

The mixed solvent vapor treatment by the acetic acid with chlorobenzene (HAc/CB) improves the morphology and crystallization of CH3NH3PbI3 films.

Room-temperature mixed-solvent-vapor annealing for high performance perovskite solar cells

2016 ◽  
Vol 4 (1) ◽  
pp. 321-326 ◽  
Author(s):  
Hao Yu ◽  
Xiaodong Liu ◽  
Yijun Xia ◽  
Qingqing Dong ◽  
Kaicheng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Room Temperature ◽  
Mixed Solvent ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing ◽  
Annealing Method

A facile annealing method of room-temperature mixed-solvent-vapor annealing (rtMSVA) was proposed to fabricate high crystallinity and ultra-smooth perovskite thin films, and the photovoltaic performance of perovskite solar cells was improved with the rtMSVA treatment.

scholarly journals Effect of Annealing Process on CH3NH3PbI3-XClX Film Morphology of Planar Heterojunction Perovskite Solar Cells with Optimal Compact TiO2 Layer

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Dan Chen ◽  
Xiaoping Zou ◽  
Hong Yang ◽  
Ningning Zhang ◽  
Wenbin Jin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Annealing Temperature ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Annealing Process ◽  
Film Morphology ◽  
Perovskite Layer ◽  
Optimal Procedures ◽  
Planar Heterojunction ◽  
Annealing Method

The morphology of compact TiO2 film used as an electron-selective layer and perovskite film used as a light absorption layer in planar perovskite solar cells has a significant influence on the photovoltaic performance of the devices. In this paper, the spin coating speed of the compact TiO2 is investigated in order to get a high-quality film and the compact TiO2 film exhibits pinhole- and crack-free films treated by 2000 rpm for 60 s. Furthermore, the effect of annealing process, including annealing temperature and annealing program, on CH3NH3PbI3-XClX film morphology is studied. At the optimal annealing temperature of 100°C, the CH3NH3PbI3-XClX morphology fabricated by multistep slow annealing method has smaller grain boundaries and holes than that prepared by one-step direct annealing method, which results in the reduction of grain boundary recombination and the increase of Voc. With all optimal procedures, a planar fluorine-doped tin oxide (FTO) substrate/compact TiO2/CH3NH3PbI3-XClX/Spiro-MeOTAD/Au cell is prepared for an active area of 0.1 cm2. It has achieved a power conversion efficiency (PCE) of 14.64%, which is 80.3% higher than the reference cell (8.12% PCE) without optimal perovskite layer. We anticipate that the annealing process with optimal compact TiO2 layer would possibly become a promising method for future industrialization of planar perovskite solar cells.

Enhancing the photovoltaic performance of planar heterojunction perovskite solar cells by doping the perovskite layer with alkali metal ions

2016 ◽  
Vol 4 (42) ◽  
pp. 16546-16552 ◽  
Author(s):  
Jingjing Chang ◽  
Zhenhua Lin ◽  
Hai Zhu ◽  
Furkan Halis Isikgor ◽  
Qing-Hua Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Alkali Metal ◽  
Metal Ions ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Alkali Metal Ions ◽  
Perovskite Layer ◽  
Photovoltaic Efficiency ◽  
Planar Heterojunction

Doping the perovskite layer with a small amount of alkali metal ions can enhance the photovoltaic efficiency of perovskite solar cells.

Organic solvent vapor treatment of lead iodide layers in the two-step sequential deposition of CH3NH3PbI3-based perovskite solar cells

2016 ◽  
Vol 4 (5) ◽  
pp. 1947-1952 ◽  
Author(s):  
M. I. El-Henawey ◽  
Ryan S. Gebhardt ◽  
M. M. El-Tonsy ◽  
Sumit Chaudhary
Keyword(s):  
Grain Size ◽  
Solar Cells ◽  
Organic Solvent ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Solvent Vapor ◽  
Sequential Deposition ◽  
Vapor Treatment

The two step sequential deposition of CH3NH3PbI3-based perovskite solar cells has been modified by applying toluene and chlorobenzene vapors during the preparation of PbI2 films leading to the growth of the PbI2 grain size.

Interfacial engineering of self-assembled monolayer modified semi-roll-to-roll planar heterojunction perovskite solar cells on flexible substrates

2015 ◽  
Vol 3 (48) ◽  
pp. 24254-24260 ◽  
Author(s):  
Zhuowei Gu ◽  
Lijian Zuo ◽  
Thue T. Larsen-Olsen ◽  
Tao Ye ◽  
Gang Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Flexible Substrates ◽  
Self Assembled Monolayer ◽  
Interfacial Engineering ◽  
Roll To Roll ◽  
Self Assembled ◽  
Planar Heterojunction

A self-assembled monolayer is employed to modify the HTL in inverted perovskite solar cells, which results in significant photovoltaic performance enhancement, and can be applied on roll-to-roll fabricated flexible perovskite solar cells.

scholarly journals Molecular Doping for Hole Transporting Materials in Hybrid Perovskite Solar Cells

Metals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 14 ◽  
Author(s):  
Vanira Trifiletti ◽  
Thibault Degousée ◽  
Norberto Manfredi ◽  
Oliver Fenwick ◽  
Silvia Colella ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Research Field ◽  
Hole Transport ◽  
Material Structure ◽  
Stable Configuration ◽  
Oxidative Doping ◽  
Molecular Doping ◽  
Planar Heterojunction

Hybrid lead halide perovskites have been revolutionary in the photovoltaic research field, reaching efficiencies comparable with the most established photovoltaic technologies, although they have not yet reached their competitors’ stability. The search for a stable configuration requires the engineering of the charge extraction layers; in this work, molecular doping is used as an efficient method for small molecules and polymers employed as hole transport materials in a planar heterojunction configuration on compact-TiO2. We proved the viability of this approach, obtaining significantly increased performances and reduced hysteresis on compact titania-based devices. We investigated the photovoltaic performance correlated to the hole transport material structure. We have demonstrated that the molecular doping mechanism is more reliable than oxidative doping and have verified that molecular doping in polymeric hole transport materials leads to highly efficient perovskite solar cells, with long-term stability.

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