scholarly journals Entropic stabilization of mixed A-cation ABX3 metal halide perovskites for high performance perovskite solar cells

2016 ◽  
Vol 9 (2) ◽  
pp. 656-662 ◽  
Author(s):  
Chenyi Yi ◽  
Jingshan Luo ◽  
Simone Meloni ◽  
Ariadni Boziki ◽  
Negar Ashari-Astani ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Phase ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Halide Perovskites ◽  
Entropic Stabilization

A mixture of CsPbI3 and FAPbI3 is thermodynamically stabilized in the perovskite phase with respect to the pure δ phases.

Sensitivity of mixed cation/halide perovskites to evaporation kinetics of DMSO at early stage

2021 ◽  
Author(s):  
GYUMIN KIM ◽  
Eun Seo Oh ◽  
Ajay Kumar Jena ◽  
Tsutomu Miyasaka
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Early Stage ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Annealing Step ◽  
Halide Perovskites ◽  
Kinetics Of ◽  
Evaporation Kinetics

Controlling the evaporation kinetics of the perovskite precursor (EKP) during the thermal annealing step of organic–inorganic hybrid perovskite solar cells (OIHPs) is important for achieving high performance. Although regulation of...

scholarly journals Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dots for High-Performance Solar Cells

2019 ◽  
Author(s):  
Sofia Masi ◽  
Carlos Echeverría-Arrondo ◽  
Salim K.P. Muhammed ◽  
Thi Tuyen Ngo ◽  
Perla F. Méndez ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Perovskite Phase ◽  
Perovskite Solar Cells ◽  
Relative Size ◽  
Lead Iodide ◽  
Structural Stabilization ◽  
Halide Perovskites

<b>The extraordinary low non-radiative recombination and band gap versatility of halide perovskites have led to considerable development in optoelectronic devices. However, this versatility is limited by the stability of the perovskite phase, related to the relative size of the different cations and anions. The most emblematic case is that of formamidinium lead iodine (FAPI) black phase, which has the lowest band gap among all 3D lead halide perovskites, but quickly transforms into the non-perovskite yellow phase at room temperature. Efforts to optimize perovskite solar cells have largely focused on the stabilization of FAPI based perovskite structures, often introducing alternative anions and cations. However, these approaches commonly result in a blue-shift of the band gap, which limits the maximum photo-conversion efficiency. Here, we report the use of PbS colloidal quantum dots (QDs) as stabilizing agent for the FAPI perovskite black phase. The surface chemistry of PbS plays a pivotal role, by developing strong bonds with the black phase but weak ones with the yellow phase. As a result, stable FAPI black phase can be formed at temperatures as low as 85°C in just 10 minutes, setting a record of concomitantly fast and low temperature formation for FAPI, with important consequences for industrialization. FAPI thin films obtained through this procedure preserve the original low band gap of 1.5 eV, reach a record open circuit potential (V<sub>oc</sub>) of 1.105 V -91% of the maximum theoretical V<sub>oc</sub>- and preserve high efficiency for more than 700 hours. These findings reveal the potential of strategies exploiting the chemi-structural properties of external additives to relax the tolerance factor and optimize the optoelectronic performance of perovskite materials.</b>

A‐Site Cation Engineering of Metal Halide Perovskites: Version 3.0 of Efficient Tin‐Based Lead‐Free Perovskite Solar Cells

2020 ◽  
Vol 30 (34) ◽  
pp. 2000794 ◽  
Author(s):  
Weiyin Gao ◽  
Changshun Chen ◽  
Chenxin Ran ◽  
Hao Zheng ◽  
He Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Lead Free ◽  
Halide Perovskites ◽  
A Site

Enhancing the grain size of organic halide perovskites by sulfonate-carbon nanotube incorporation in high performance perovskite solar cells

2016 ◽  
Vol 52 (33) ◽  
pp. 5674-5677 ◽  
Author(s):  
Yong Zhang ◽  
Licheng Tan ◽  
Qingxia Fu ◽  
Lie Chen ◽  
Ting Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Grain Size ◽  
Solar Cells ◽  
Carbon Nanotube ◽  
Grain Boundary ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Organic Halide ◽  
Halide Perovskites

Perovskite films with enhanced grain size and reduced grain boundary were obtained with the incorporation of sulfonate-carbon nanotubes.

scholarly journals Colloidal Quantum Dots and Metal Halide Perovskite Hybridization for Solar Cells Stability and Performance Enhancement

2021 ◽  
Author(s):  
Dong Yan ◽  
Mengxia Liu ◽  
Zhe Li ◽  
Bo Hou
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
High Performance ◽  
Performance Enhancement ◽  
Metal Halide ◽  
Colloidal Quantum Dots ◽  
Metal Halide Perovskite ◽  
Photoactive Materials ◽  
Halide Perovskites ◽  
And Performance

Metal halide perovskites and colloidal quantum dots (QDs) are two emerging class of photoactive materials that has been attracted considerable attention for next-generation high-performance solution-processed solar cells. In particular, the...

Star-Polymer Multidentate-Cross-Linking Strategy for Superior Operational Stability of Inverted Perovskite Solar Cells at High Efficiency

2021 ◽  
Author(s):  
Qi Cao ◽  
Jiabao Yang ◽  
Tong Wang ◽  
Yuke Li ◽  
Xingyu Pu ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Rapid Development ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Operational Stability ◽  
Star Polymer ◽  
Cross Linking ◽  
Halide Perovskites ◽  
Catch Up

Metal halide perovskites have attracted rapid development and great attention mainly due to its excellent optoelectronic properties. Currently, the efficiency of inverted (p-i-n) PSCs are around 23%, which catch up...

Methylthiophene terminated D-π-D molecular semiconductor as multifunctional interfacial material for high performance perovskite solar cells

2022 ◽  
Author(s):  
Hao Zhang ◽  
Yuhua Mao ◽  
Jie Xu ◽  
Shanshan Li ◽  
Fusheng Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Physicochemical Properties ◽  
Performance Improvement ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Metal Halide ◽  
Metal Halide Perovskite ◽  
Halide Perovskite ◽  
Interfacial Material ◽  
Molecular Semiconductor

Rational modulating the physicochemical properties at perovskite-charge transporting layer interface is crucial for further performance improvement of metal halide perovskite solar cells (PSCs). Here, we present two methylthiophene terminated molecular...

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