scholarly journals Microseconds, milliseconds and seconds: deconvoluting the dynamic behaviour of planar perovskite solar cells

2017 ◽  
Vol 19 (8) ◽  
pp. 5959-5970 ◽  
Author(s):  
Adam Pockett ◽  
Giles E. Eperon ◽  
Nobuya Sakai ◽  
Henry J. Snaith ◽  
Laurence M. Peter ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dynamic Behaviour ◽  
Perovskite Solar Cells ◽  
Electron Hole ◽  
Ionic Environment ◽  
Electronic Conductors ◽  
Hole Recombination

Perovskite solar cells are shown to behave as coupled ionic–electronic conductors with evidence that the ionic environment moderates the rate of electron–hole recombination.

Toward charge extraction in all-inorganic perovskite solar cells by interfacial engineering

2018 ◽  
Vol 6 (44) ◽  
pp. 21999-22004 ◽  
Author(s):  
Jie Ding ◽  
Jialong Duan ◽  
Chenyang Guo ◽  
Qunwei Tang
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Electron Hole ◽  
Inorganic Perovskite ◽  
Interfacial Engineering ◽  
Charge Extraction ◽  
Hole Recombination

CuInS2/ZnS QDs with tunable bandgaps were applied at the CsPbBr3/carbon interface for improved hole extraction and reduced electron–hole recombination. A PCE of as high as 8.42% was achieved for QDs tailored all-inorganic PSC in comparison with 6.01% for the pristine device.

Inverted perovskite solar cells with inserted cross-linked electron-blocking interlayers for performance enhancement

2015 ◽  
Vol 3 (17) ◽  
pp. 9291-9297 ◽  
Author(s):  
Hong-Jyun Jhuo ◽  
Po-Nan Yeh ◽  
Sih-Hao Liao ◽  
Yi-Lun Li ◽  
Sunil Sharma ◽  
...  
Keyword(s):  
Solar Cells ◽  
Performance Enhancement ◽  
Perovskite Solar Cells ◽  
Type Solution ◽  
Electron Hole ◽  
Solvent Resistance ◽  
Solution Processed ◽  
Hole Recombination

Cross-linked anode interlayers (X-QUPD or X-OTPD) with solvent-resistance provide electron blocking to reduce electron–hole recombination for improving PCE of invert type solution processed perovskite solar cells.

scholarly journals Research Update: Relativistic origin of slow electron-hole recombination in hybrid halide perovskite solar cells

APL Materials ◽  
2016 ◽  
Vol 4 (9) ◽  
pp. 091501 ◽  
Author(s):  
Pooya Azarhoosh ◽  
Scott McKechnie ◽  
Jarvist M. Frost ◽  
Aron Walsh ◽  
Mark van Schilfgaarde
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Slow Electron ◽  
Electron Hole ◽  
Halide Perovskite ◽  
Hole Recombination

Synergic effects of upconversion nanoparticles NaYbF4:Ho3+ and ZrO2 enhanced the efficiency in hole-conductor-free perovskite solar cells

Nanoscale ◽  
2018 ◽  
Vol 10 (46) ◽  
pp. 22003-22011 ◽  
Author(s):  
Yanyan Li ◽  
Li Zhao ◽  
Meng Xiao ◽  
Yimin Huang ◽  
Binghai Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Recombination Rate ◽  
Perovskite Solar Cells ◽  
Upconversion Nanoparticles ◽  
Electron Hole ◽  
Dual Functional ◽  
Nir Light ◽  
Hole Recombination

This design enabled the dual-functional effects, that is, the harvesting of NIR light and its conversion to visible light and the reduction of the electron–hole recombination rate.

Interface engineering of perovskite solar cells with PEO for improved performance

2015 ◽  
Vol 3 (18) ◽  
pp. 9999-10004 ◽  
Author(s):  
H. P. Dong ◽  
Y. Li ◽  
S. F. Wang ◽  
W. Z. Li ◽  
N. Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Collection Efficiency ◽  
Perovskite Solar Cells ◽  
Device Performance ◽  
Interface Engineering ◽  
Electron Hole ◽  
Electron Collection ◽  
Improved Performance ◽  
Hole Recombination ◽  
Electron Collection Efficiency

A thin PEO layer was spin-coated on top of TiOx to modify the ETL for improved electron collection efficiency and better retarded electron–hole recombination, and therefore enhance device performance.

scholarly journals Laminating Fabrication of Bifacial Organic-Inorganic Perovskite Solar Cells

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Yujing Yang ◽  
Yue Zhu ◽  
Xiaoxiao Wang ◽  
Qi Song ◽  
Chao Ji ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Temperature ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Electron Hole ◽  
Inorganic Perovskite ◽  
Hole Recombination

Bifacial solar cells based on organic-inorganic perovskite are fabricated with a laminating process. The structure of the devices is ITO/SnO2/CH3NH3PbI3/NiOx/ITO, in which both electrodes are the transparent ITO layer. Therefore, the device can receive light from both sides. By laminating the two half-devices, ITO/SnO2/CH3NH3PbI3 and CH3NH3PbI3/NiOx/ITO, at high temperature with pressure, the merging of the middle perovskite layers is enhanced. The optimized bifacial PSCs show a Voc of 0.85 V, FF of 0.58, Jsc of 17.53 mA/cm2, and PCE of 8.47%. The photovoltaic performance varies when the light is illuminated from different sides of the bifacial PSCs. With illumination from the SnO2 side, the Voc and Jsc of the PSCs are apparently higher than those from the NiOx side, suggesting more severe electron-hole recombination at the NiOx/perovskite interface than at the SnO2/perovskite interface.

Characteristics of Perovskite Solar Cells with Methylammonium Iodide-Added Anti-Solvent

2021 ◽  
Vol 21 (8) ◽  
pp. 4367-4371
Author(s):  
Sung Hwan Joo ◽  
Il Tae Kim ◽  
Hyung Wook Choi
Keyword(s):  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Step Method ◽  
Electron Hole ◽  
Perovskite Layer ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
One Step ◽  
Hole Recombination

The perovskite film—manufactured via a one-step method—was superficially improved through an anti-solvent process to increase solar cell efficiency. Although perovskite synthesis proceeds rapidly, a significant amount of lead iodide residue remains. Well-placed lead iodide in perovskite grains prevents electron–hole recombination; however, when irregularly placed, it interferes with the movement of electron and holes. In this study, we focused on improving the crystallinity of the perovskite layer, as well as reducing lead iodide residues by adding a methylammonium halide material to the anti-solvent. Methylammonium iodide in chlorobenzene used as an anti-solvent reduces lead iodide residues and improves the crystallinity of formamidinium lead iodide perovskite. The improved crystallinity of the perovskite layer increased the absorbance and, with reduced lead iodide residues, increased the efficiency of the perovskite solar cell by 1.914%.

scholarly journals Lone-pair effect on carrier capture in Cu2ZnSnS4solar cells

2019 ◽  
Vol 7 (6) ◽  
pp. 2686-2693 ◽  
Author(s):  
Sunghyun Kim ◽  
Ji-Sang Park ◽  
Samantha N. Hood ◽  
Aron Walsh
Keyword(s):  
Solar Cells ◽  
Fast Electron ◽  
Lone Electron Pair ◽  
Electron Pair ◽  
Lone Pair ◽  
Electron Hole ◽  
Carrier Capture ◽  
Hole Recombination

Fast electron–hole recombination in kesterite solar cells is linked to the chemistry of the Sn lone electron pair.

scholarly journals Direct Observation of Long Electron-Hole Diffusion Distance in CH3NH3PbI3 Perovskite Thin Film

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Yu Li ◽  
Weibo Yan ◽  
Yunlong Li ◽  
Shufeng Wang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Acid Methyl Ester ◽  
Diffusion Distance ◽  
Transfer Layer ◽  
Electron Hole ◽  
Direct Support ◽  
Short Diffusion Distance

Abstract In high performance perovskite based solar cells, CH3NH3PbI3 is the key material. We carried out a study on charge diffusion in spin-coated CH3NH3PbI3 perovskite thin film by transient fluorescent spectroscopy. A thickness-dependent fluorescent lifetime was found. By coating the film with an electron or hole transfer layer, [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) or 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (Spiro-OMeTAD) respectively, we observed the charge transfer directly through the fluorescence quenching. One-dimensional diffusion model was applied to obtain long charge diffusion distances in thick films, which is ~1.7 μm for electrons and up to ~6.3 μm for holes. Short diffusion distance of few hundreds of nanometer was also observed in thin film. This thickness dependent charge diffusion explained the formerly reported short charge diffusion distance (~100 nm) in films and resolved its confliction to thick working layer (300–500 nm) in real devices. This study presents direct support to the high performance perovskite solar cells and will benefit the devices’ design.

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