Effects of Postsynthesis Thermal Conditions on Methylammonium Lead Halide Perovskite: Band Bending at Grain Boundaries and Its Impacts on Solar Cell Performance

2016 ◽  
Vol 120 (38) ◽  
pp. 21330-21335 ◽  
Author(s):  
Daehan Kim ◽  
Gee Yeong Kim ◽  
Changhyun Ko ◽  
Seong Ryul Pae ◽  
Yun Seog Lee ◽  
...  
Keyword(s):  
Solar Cell ◽  
Grain Boundaries ◽  
Thermal Conditions ◽  
Cell Performance ◽  
Band Bending ◽  
Solar Cell Performance ◽  
Halide Perovskite ◽  
Lead Halide

Passivation and process engineering approaches for high stability perovskite solar cells

2021 ◽  
Author(s):  
Abdul Rashid Bin Mohd Yusoff ◽  
Maria Vasilopoulou ◽  
Dimitra Georgiadou ◽  
Leonidas C. Palilis ◽  
Antonio Abate ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Grain Boundaries ◽  
High Stability ◽  
Perovskite Solar Cells ◽  
Process Engineering ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Halide Perovskite

The surface, interfaces and grain boundaries of a halide perovskite film carry critical tasks in achieving as well as maintaining high solar cell performance due to the inherently defective nature...

Temperature-assisted rapid nucleation: a facile method to optimize the film morphology for perovskite solar cells

2017 ◽  
Vol 5 (38) ◽  
pp. 20327-20333 ◽  
Author(s):  
Ying-Ke Ren ◽  
Xi-Hong Ding ◽  
Ya-Han Wu ◽  
Jun Zhu ◽  
Tasawar Hayat ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Perovskite Solar Cells ◽  
Important Influence ◽  
Cell Performance ◽  
Film Morphology ◽  
Solar Cell Performance ◽  
Nucleation Stage ◽  
Halide Perovskite ◽  
Lead Halide

The nucleation stage has an important influence on the lead halide perovskite film morphology, and therefore the solar cell performance.

scholarly journals Quantification of electron accumulation at grain boundaries in perovskite polycrystalline films by correlative infrared-spectroscopic nanoimaging and Kelvin probe force microscopy

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Ting-Xiao Qin ◽  
En-Ming You ◽  
Mao-Xin Zhang ◽  
Peng Zheng ◽  
Xiao-Feng Huang ◽  
...  
Keyword(s):  
Solar Cell ◽  
Grain Boundaries ◽  
Cell Performance ◽  
Kelvin Probe Force Microscopy ◽  
Light Illumination ◽  
Kelvin Probe ◽  
Solar Cell Performance ◽  
Force Microscopy ◽  
Infrared Spectroscopic

AbstractOrganic–inorganic halide perovskites are emerging materials for photovoltaic applications with certified power conversion efficiencies (PCEs) over 25%. Generally, the microstructures of the perovskite materials are critical to the performances of PCEs. However, the role of the nanometer-sized grain boundaries (GBs) that universally existing in polycrystalline perovskite films could be benign or detrimental to solar cell performance, still remains controversial. Thus, nanometer-resolved quantification of charge carrier distribution to elucidate the role of GBs is highly desirable. Here, we employ correlative infrared-spectroscopic nanoimaging by the scattering-type scanning near-field optical microscopy with 20 nm spatial resolution and Kelvin probe force microscopy to quantify the density of electrons accumulated at the GBs in perovskite polycrystalline thin films. It is found that the electron accumulations are enhanced at the GBs and the electron density is increased from 6 × 1019 cm−3 in the dark to 8 × 1019 cm−3 under 10 min illumination with 532 nm light. Our results reveal that the electron accumulations are enhanced at the GBs especially under light illumination, featuring downward band bending toward the GBs, which would assist in electron-hole separation and thus be benign to the solar cell performance.

Enhanced Photoluminescence and Solar Cell Performance via Lewis Base Passivation of Organic–Inorganic Lead Halide Perovskites

ACS Nano ◽  
2014 ◽  
Vol 8 (10) ◽  
pp. 9815-9821 ◽  
Author(s):  
Nakita K. Noel ◽  
Antonio Abate ◽  
Samuel D. Stranks ◽  
Elizabeth S. Parrott ◽  
Victor M. Burlakov ◽  
...  
Keyword(s):  
Solar Cell ◽  
Lewis Base ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Enhanced Photoluminescence ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Environmental Friendly Multi-step Processing of Efficient Mixed-cation Mixed Halide Perovskite Solar Cells from Chemically Bath Deposited Lead Sulphide

2021 ◽  
Author(s):  
Sahel Gozalzadeh ◽  
Farzad Nasirpouri ◽  
Sang Il Seok
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Perovskite Solar Cells ◽  
Processing Technique ◽  
Cell Performance ◽  
Lead Sulphide ◽  
Solar Cell Performance ◽  
Mixed Cation ◽  
Halide Perovskite

Abstract Organic-inorganic hybrid perovskite is the most promising active layer for new generation of solar cells. Despite of highly efficient perovskite active layer conventionally fabricated by spin coating methods, the need for using toxic solvents like dimethylformamide (DMF) required for dissolving low soluble metal precursors as well as the difficulties for upscaling the process have restricted their practical development. To deal with these shortcomings, in this work, lead sulphide as the lead metal precursor was produced by aqueous chemical bath deposition. PbS films were subsequently chemically converted to PbI2 and finally to mixed-cation mixed halide perovskite films. The microstructural, optical and solar cell performance of mixed cation mixed halide perovskite films were exploited. Results show that controlling the morphology of PbI2 platelets achieved from PbS precursor films enabled efficient conversion to perovskite. Using this processing technique, smooth and pin hole-free perovskite films having columnar grains of about 800 nm and a bandgap of 1.55 eV were produced. The solar cell performance consisting of such perovskite layers gave rise to a notable power conversion efficiency of 11.35% under standard solar conditions. The proposed processing technique is a very promising environmentally friendly method for the production of large-scale high efficient perovskite solar cells.

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