Trap State Passivation by Rational Ligand Molecule Engineering toward Efficient and Stable Perovskite Solar Cells Exceeding 23% Efficiency

2021 ◽  
pp. 2100529
Author(s):  
Lihua Zhu ◽  
Xian Zhang ◽  
Mengjia Li ◽  
Xueni Shang ◽  
Kaixiang Lei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Ligand Molecule ◽  
Trap State

scholarly journals Nanoscale control of grain boundary potential barrier, dopant density and filled trap state density for higher efficiency perovskite solar cells

InfoMat ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 409-423 ◽  
Author(s):  
Behzad Bahrami ◽  
Sally Mabrouk ◽  
Nirmal Adhikari ◽  
Hytham Elbohy ◽  
Ashim Gurung ◽  
...  
Keyword(s):  
Solar Cells ◽  
Grain Boundary ◽  
Potential Barrier ◽  
Perovskite Solar Cells ◽  
State Density ◽  
Trap State ◽  
Boundary Potential

Shallow and Deep Trap State Passivation for Low-Temperature Processed Perovskite Solar Cells

2020 ◽  
Vol 5 (5) ◽  
pp. 1396-1403 ◽  
Author(s):  
Randi Azmi ◽  
Naufan Nurrosyid ◽  
Sang-Hak Lee ◽  
Muhibullah Al Mubarok ◽  
Wooseop Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Perovskite Solar Cells ◽  
Deep Trap ◽  
Trap State

Extremely low trap-state energy level perovskite solar cells passivated using NH2-POSS with improved efficiency and stability

2018 ◽  
Vol 6 (16) ◽  
pp. 6806-6814 ◽  
Author(s):  
Na Liu ◽  
Qin Du ◽  
Guangzhong Yin ◽  
Pengfei Liu ◽  
Liang Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
State Energy ◽  
Perovskite Solar Cells ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Film Surface ◽  
Amino Group ◽  
Trap State ◽  
Temperature Dependent ◽  
Oligomeric Silsesquioxane

The defects at perovskite film surface could be passivated effectively using a derivative of polyhedral oligomeric silsesquioxane with an amino-group (NH2-POSS). The extremely low trap-state energy level (0.045 eV) was obtained by temperature-dependent admittance measurements. Both stability and efficiency in devices have been approved.

Improving the stability and decreasing the trap state density of mixed-cation perovskite solar cells through compositional engineering

2018 ◽  
Vol 2 (6) ◽  
pp. 1332-1341 ◽  
Author(s):  
Kianoosh Poorkazem ◽  
Timothy L. Kelly
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
State Density ◽  
Trap State ◽  
Term Stability ◽  
Long Term Stability ◽  
Mixed Cation ◽  
The Stability

In order to become a commercially viable technology, perovskite solar cells will require both high efficiencies and long-term stability.

Moisture-driven phase transition for improved perovskite solar cells with reduced trap-state density

Nano Research ◽  
2017 ◽  
Vol 10 (4) ◽  
pp. 1413-1422 ◽  
Author(s):  
Swaminathan Venkatesan ◽  
Fang Hao ◽  
Junyoung Kim ◽  
Yaoguang Rong ◽  
Zhuan Zhu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
State Density ◽  
Trap State

scholarly journals Fabrication of Porous Lead Bromide Films by Introducing Indium Tribromide for Efficient Inorganic CsPbBr3 Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1253
Author(s):  
Xianwei Meng ◽  
Kailin Chi ◽  
Qian Li ◽  
Bingtao Feng ◽  
Haodi Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
State Density ◽  
Trap State ◽  
Lead Bromide ◽  
Low Solubility ◽  
Multi Step Methods

In the process of preparing CsPbBr3 films by two-step or multi-step methods, due to the low solubility of CsBr in organic solvents, the prepared perovskite films often have a large number of holes, which is definitely not conducive to the performance of CsPbBr3 perovskite solar cells (PSCs). In response to this problem, this article proposed a method of introducing InBr3 into the PbBr2 precursor to prepare a porous PbBr2 film to increase the reaction efficiency between CsBr and PbBr2 and achieve the purpose of In (Ⅲ) incorporation, which not only optimized the morphology of the produced CsPbBr3 film but also enhanced the charge extraction and transport capabilities, which was ascribed to the reduction of the trap state density and impurity phases in the perovskite films, improving the performance of CsPbBr3 PSCs. At the optimal InBr3 concentration of 0.21 M, the InBr3:CsPbBr3 perovskite solar cell exhibited a power conversion efficiency of 6.48%, which was significantly higher than that of the pristine device.

Compositional engineering solutions for decreasing trap state density and improving thermal stability in perovskite solar cells

2021 ◽  
Author(s):  
Manala Tabu Mbumba ◽  
Davy Maurice Malouangou ◽  
Jadel Matondo Tsiba ◽  
Muhammad Waleed Akram ◽  
Luyun Bai ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
State Density ◽  
Defect Concentration ◽  
Thermally Stable ◽  
Trap State ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

Cation compositional engineering in methylammonium lead iodide perovskites results in a controlled defect concentration of 1014 cm −3 and a thermally stable perovskite film. The device retains about 92% of its initial PCE even above 75 °C for more than 1000 h.

A Breakthrough Efficiency of 19.9% Obtained in Inverted Perovskite Solar Cells by Using an Efficient Trap State Passivator Cu(thiourea)I

2017 ◽  
Vol 139 (22) ◽  
pp. 7504-7512 ◽  
Author(s):  
Senyun Ye ◽  
Haixia Rao ◽  
Ziran Zhao ◽  
Linjuan Zhang ◽  
Hongliang Bao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Trap State
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