scholarly journals Perovskite Solar Cells Yielding Reproducible Photovoltage of 1.20 V

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Essa A. Alharbi ◽  
M. Ibrahim Dar ◽  
Neha Arora ◽  
Mohammad Hayal Alotaibi ◽  
Yahya A. Alzhrani ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Nonradiative Recombination ◽  
Time Resolved ◽  
Carrier Recombination ◽  
Absorber Material ◽  
Charge Carrier Recombination ◽  
Conversion Efficiencies

High photovoltages and power conversion efficiencies of perovskite solar cells (PSCs) can be realized by controlling the undesired nonradiative charge carrier recombination. Here, we introduce a judicious amount of guanidinium iodide into mixed-cation and mixed-halide perovskite films to suppress the parasitic charge carrier recombination, which enabled the fabrication of >20% efficient and operationally stable PSCs yielding reproducible photovoltage as high as 1.20 V. By introducing guanidinium iodide into the perovskite precursor solution, the bandgap of the resulting absorber material changed minimally; however, the nonradiative recombination diminished considerably as revealed by time-resolved photoluminescence and electroluminescence studies. Furthermore, using capacitance-frequency measurements, we were able to correlate the hysteresis features exhibited by the PSCs with interfacial charge accumulation. This study opens up a path to realize new record efficiencies for PSCs based on guanidinium iodide doped perovskite films.

scholarly journals Perovskite Solar Cells Yielding Reproducible Photovoltage of 1.20 V

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Essa A. Alharbi ◽  
M. Ibrahim Dar ◽  
Neha Arora ◽  
Mohammad Hayal Alotaibi ◽  
Yahya A. Alzhrani ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Nonradiative Recombination ◽  
Time Resolved ◽  
Carrier Recombination ◽  
Absorber Material ◽  
Charge Carrier Recombination ◽  
Conversion Efficiencies

High photovoltages and power conversion efficiencies of perovskite solar cells (PSCs) can be realized by controlling the undesired nonradiative charge carrier recombination. Here, we introduce a judicious amount of guanidinium iodide into mixed-cation and mixed-halide perovskite films to suppress the parasitic charge carrier recombination, which enabled the fabrication of >20% efficient and operationally stable PSCs yielding reproducible photovoltage as high as 1.20 V. By introducing guanidinium iodide into the perovskite precursor solution, the bandgap of the resulting absorber material changed minimally; however, the nonradiative recombination diminished considerably as revealed by time-resolved photoluminescence and electroluminescence studies. Furthermore, using capacitance-frequency measurements, we were able to correlate the hysteresis features exhibited by the PSCs with interfacial charge accumulation. This study opens up a path to realize new record efficiencies for PSCs based on guanidinium iodide doped perovskite films.

Efficient Defect Passivation with Niacin for High-Performance and Stable Perovskite Solar Cells

2021 ◽  
Author(s):  
Jing Ren ◽  
Shurong Wang ◽  
Jianxing Xia ◽  
Chengbo Li ◽  
Lisha Xie ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Carrier Recombination ◽  
Defect Passivation ◽  
Recombination Centers ◽  
Charge Carrier Recombination ◽  
Halide Perovskite

Defects, inevitably produced in the solution-processed halide perovskite films, can act as charge carrier recombination centers to induce severe energy loss in perovskite solar cells (PSCs). Suppressing these trap states...

Interfacial Study To Suppress Charge Carrier Recombination for High Efficiency Perovskite Solar Cells

2015 ◽  
Vol 7 (48) ◽  
pp. 26445-26454 ◽  
Author(s):  
Nirmal Adhikari ◽  
Ashish Dubey ◽  
Devendra Khatiwada ◽  
Abu Farzan Mitul ◽  
Qi Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Carrier Recombination ◽  
Charge Carrier Recombination

Efficient Perovskite Solar Cells through Suppressed Nonradiative Charge Carrier Recombination by a Processing Additive

2019 ◽  
Vol 11 (43) ◽  
pp. 40163-40171 ◽  
Author(s):  
Xiang Yao ◽  
Luyao Zheng ◽  
Xiaotao Zhang ◽  
Wenzhan Xu ◽  
Wenping Hu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Perovskite Solar Cells ◽  
Carrier Recombination ◽  
Charge Carrier Recombination

scholarly journals Impact of charge carrier recombination and energy disorder on the open-circuit voltage of polymer solar cells

2020 ◽  
Vol 69 (4) ◽  
pp. 046101
Author(s):  
Qing-Zhong Zhou ◽  
Feng Guo ◽  
Ming-Rui Zhang ◽  
Qing-Liang You ◽  
Biao Xiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Carrier Recombination ◽  
Energy Disorder ◽  
Charge Carrier Recombination

Effect of dihydronaphthyl-based C60 bisadduct as third component materials on the photovoltaic performance and charge carrier recombination of binary PBDB-T : ITIC polymer solar cells

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8483-8495 ◽  
Author(s):  
Shengli Niu ◽  
Zhiyong Liu ◽  
Ning Wang
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Carrier Recombination ◽  
Binary Polymer ◽  
Component Material ◽  
Charge Carrier Recombination

A dihydronaphthyl-based C60 bisadduct (NCBA) acceptor was introduced as a third component material to typical binary polymer solar cells (PSCs).

Partial oxidation of the absorber layer reduces charge carrier recombination in antimony sulfide solar cells

2017 ◽  
Vol 19 (2) ◽  
pp. 1425-1430 ◽  
Author(s):  
Karl C. Gödel ◽  
Bart Roose ◽  
Aditya Sadhanala ◽  
Yana Vaynzof ◽  
Sandeep K. Pathak ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Solar Cells ◽  
Charge Carrier ◽  
Partial Oxidation ◽  
Absorber Layer ◽  
Antimony Sulfide ◽  
Carrier Recombination ◽  
Charge Carrier Recombination ◽  
Sensitized Solar Cells

A controlled heat treatment of the absorber layer in air leads to improved Sb2S3 sensitized solar cells. A reduction in charge carrier recombination is the reason for the enhancement.

Bismuth-Antimony mixed double perovskites Cs2AgBi1-xSbxBr6 in solar cells

MRS Advances ◽  
2019 ◽  
Vol 4 (64) ◽  
pp. 3545-3552
Author(s):  
Martina Pantaler ◽  
Selina Olthof ◽  
Klaus Meerholz ◽  
Doru C. Lupascu
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Double Perovskite ◽  
Mixed System ◽  
Double Perovskites ◽  
Solar Cell Performance ◽  
Absorber Material ◽  
Bismuth Antimony ◽  
Conversion Efficiencies

AbstractReported conversion efficiencies of lead based perovskite solar cells keep increasing steadily. But next to the demand for high efficiency, the need for analogue non-toxic material systems remains. One promising lead free absorber material is the double perovskite Cs2AgBiBr6. Interest in this and other double perovskites has been increasing in the last three years and several solar cells using different device structures have been reported. However, the efficiency of these solar cells is merely in the range of 2%. To further improve solar cell performance we prepared mixed bismuth-antimony double perovskite Cs2AgBi1-xSbxBr6 where different fractions of antimony (x=0.125, 0.25, 0.375, 0.50) are used. This was motivated by reports of lower bandgap values in these mixed system. After the optimization of preparation of these thin films, we have carefully analysed the effects on the structure, composition, electronic structure, as well as optical properties. Finally, we have fabricated Bi-Sb mixed double perovskite solar cells in a mesoscopic device architecture.

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