Enhanced efficiency of planar-heterojunction perovskite solar cells through a thermal gradient annealing process

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 58041-58045 ◽  
Author(s):  
Bingbing Fan ◽  
Dehua Peng ◽  
Shiwei Lin ◽  
Nü Wang ◽  
Yong Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Morphology ◽  
Thermal Gradient ◽  
Perovskite Solar Cells ◽  
Annealing Process ◽  
Planar Heterojunction

An efficient gradient annealing approach has been developed to improve the surface morphology and coverage of perovskite films, thereby increasing the efficiency of perovskite solar cells.

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.

An ionic compensation strategy for high-performance mesoporous perovskite solar cells: healing defects with tri-iodide ions in a solvent vapor annealing process

2019 ◽  
Vol 7 (1) ◽  
pp. 353-362 ◽  
Author(s):  
Tie Liu ◽  
Pengyu Su ◽  
Li Liu ◽  
Jun Wang ◽  
Shuang Feng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Morphology ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Annealing Process ◽  
Compensation Strategy ◽  
Solvent Vapor ◽  
Iodide Ions ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing

The surface morphology and J–V curves of CH3NH3PbI3 films with and without IPA/[I3−] treatment.

Management of perovskite intermediates for highly efficient inverted planar heterojunction perovskite solar cells

2017 ◽  
Vol 5 (7) ◽  
pp. 3193-3202 ◽  
Author(s):  
Yingdong Xia ◽  
Chenxin Ran ◽  
Yonghua Chen ◽  
Qi Li ◽  
Naisheng Jiang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Surface Morphology ◽  
Perovskite Solar Cells ◽  
Highly Efficient ◽  
Planar Heterojunction

The management of perovskite intermediates to construct perovskite films with uniform perovskite crystals and controlled surface morphology was introduced.

Efficient planar heterojunction perovskite solar cells with weak hysteresis fabricated via bar coating

2017 ◽  
Vol 159 ◽  
pp. 412-417 ◽  
Author(s):  
Xuan Liu ◽  
Xinxin Xia ◽  
Qiuquan Cai ◽  
Feilong Cai ◽  
Liyan Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Planar Heterojunction

Synergistic improvements in the performance and stability of inverted planar MAPbI3-based perovskite solar cells incorporating benzylammonium halide salt additives

2021 ◽  
Author(s):  
Hung-Cheng Chen ◽  
Jie-Min Lan ◽  
Hsiang-Lin Hsu ◽  
Chia-Wei Li ◽  
Tien-Shou Shieh ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Optical Properties ◽  
Solar Cells ◽  
Solar Cell ◽  
Surface Morphology ◽  
Perovskite Solar Cells ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Halide Salt

Three different benzylammonium halide (Cl, Br, and I) salts were investigated to elucidate their effects as additives on MAPbI3 perovskite surface morphology, crystal structure, optical properties, and solar cell performance and stability.

Two-dimensional device modeling of CH3NH3PbI3 based planar heterojunction perovskite solar cells

Solar Energy ◽  
2016 ◽  
Vol 123 ◽  
pp. 51-56 ◽  
Author(s):  
Qian Zhou ◽  
Debao Jiao ◽  
Kailiang Fu ◽  
Xiaojie Wu ◽  
Yongsheng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Device Modeling ◽  
Two Dimensional ◽  
Planar Heterojunction

15% efficient carbon based planar-heterojunction perovskite solar cells using a TiO2/SnO2bilayer as the electron transport layer

2018 ◽  
Vol 6 (17) ◽  
pp. 7409-7419 ◽  
Author(s):  
Zhiyong Liu ◽  
Bo Sun ◽  
Xingyue Liu ◽  
Jinghui Han ◽  
Haibo Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Low Temperature ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Planar Heterojunction ◽  
Carbon Based

Low-temperature printable carbon based planar-heterojunction perovskite solar cells with efficiencies exceeding 15% were demonstrated by using a TiO2/SnO2bilayer as ETL together with CuPc as HTL.

scholarly journals Boosting efficiency of planar heterojunction perovskite solar cells by a low temperature TiCl4 treatment

2018 ◽  
Vol 08 (02) ◽  
pp. 1850009
Author(s):  
Enqi Wang ◽  
Peng Chen ◽  
Xingtian Yin ◽  
Bowen Gao ◽  
Wenxiu Que
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Surface Defects ◽  
Perovskite Solar Cells ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Trap States ◽  
Control Devices ◽  
Planar Heterojunction ◽  
Better Than

It is well known that electron transport layer (ETL) plays an indispensable role in the planar heterojunction perovskite solar cells (PSCs). TiO2 is widely used as an ETL material due to its excellent transport properties, however, the presence of defects in the TiO2 layer diminishes the power conversion efficiency (PCE) of the devices. Herein, we introduce a method of low-temperature TiCl4 treatment to deposit a TiOx layer on the surface of TiO2 film, which can effectively passivate trap states at the TiO2 surface. Moreover, the treating process is optimized to be 30[Formula: see text]min using a 40[Formula: see text]mM TiCl4 aqueous solution. Benefiting from this, we obtain the champion device with the highest PCE of 18.47%, which is mainly due to the reduction of surface defects and the deposition of the well-crystallized perovskite films. Besides, the modified PSCs exhibit an average PCE of 17.59%, which is much better than the control devices.

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