Domain modulation and energetic disorder in ternary bulk-heterojunction organic solar cells

2021 ◽  
pp. 106376
Author(s):  
Javed Alam Khan ◽  
Ajay Singh Panwar ◽  
Dipti Gupta
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Energetic Disorder ◽  
Ternary Bulk Heterojunction

Influence of permittivity and energetic disorder on the spatial charge carrier distribution and recombination in organic bulk-heterojunctions

2017 ◽  
Vol 19 (31) ◽  
pp. 20974-20983 ◽  
Author(s):  
Tim Albes ◽  
Alessio Gagliardi
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Bulk Heterojunctions ◽  
Carrier Distribution ◽  
Spatial Charge ◽  
Energetic Disorder ◽  
Insight Into ◽  
Gaining Insight

Gaining insight into the spatial charge carrier distribution and its relation to geminate and nongeminate recombination in bulk-heterojunction organic solar cells.

A new approach for preparation of ternary bulk-heterojunction using dual-feed ultrasonic spray for organic solar cells

2019 ◽  
Vol 91 ◽  
pp. 296-304
Author(s):  
Swapnil Tak ◽  
Hemant Tarkas ◽  
Gauri Bisen ◽  
Sanjay Ghosh ◽  
Jaydeep V. Sali
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
New Approach ◽  
Ultrasonic Spray ◽  
Ternary Bulk Heterojunction

scholarly journals Interface Tuning between Two Connecting Bulk Heterojunctions in Small Molecule Bilayer Ternary Solar Cells

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4833
Author(s):  
Qi Jiang ◽  
Yingjie Xing
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Interfacial Layer ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Organic Photovoltaic ◽  
Metal Phthalocyanine ◽  
Bulk Heterojunctions ◽  
Organic Photovoltaic Device ◽  
Ternary Bulk Heterojunction

Bilayer ternary solar cells are a kind of novel organic photovoltaic device with a triple-component active layer but are different from the ternary bulk heterojunction (BHJ) blend. Two binary BHJs with a common acceptor (or donor) are deposited sequentially in this kind of device. Here, we study the fabrication and optimization of bilayer ternary solar cells using metal phthalocyanine donors and fullerene acceptor. The device power conversion efficiency (PCE) shows a significant dependence on the interface between the two binary BHJs. The interface formed by stacking two BHJs directly demonstrates severe restrictions on the device efficiency. We find that the photovoltaic performance of bilayer ternary cells can be improved by inserting a C60 molecular monolayer between the two binary BHJs. The effect of the C60 interfacial layer on charge transport is analyzed based on their transport characteristics under negative bias. A relationship between the C60 interfacial layer and recombination under illumination is discussed. This work reveals a particular influence due to the interface facing three materials in organic solar cells.

scholarly journals Thiophene- and Carbazole-Substituted N-Methyl-Fulleropyrrolidine Acceptors in PffBT4T-2OD Based Solar Cells

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1267 ◽  
Author(s):  
Hugo Gaspar ◽  
Flávio Figueira ◽  
Karol Strutyński ◽  
Manuel Melle-Franco ◽  
Dzmitry Ivanou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Systematic Investigation ◽  
Force Microscopy ◽  
Energetic Disorder ◽  
Lowest Unoccupied Molecular Orbital ◽  
Device Properties ◽  
The Impact

The impact of fullerene side chain functionalization with thiophene and carbazole groups on the device properties of bulk-heterojunction polymer:fullerene solar cells is discussed through a systematic investigation of material blends consisting of the conjugated polymer poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)-2,2′;5′,2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD) as donor and C60 or C70 fulleropyrrolidines as acceptors. The photovoltaic performance clearly depended on the molecular structure of the fulleropyrrolidine substituents although no direct correlation with the surface morphology of the photoactive layer, as determined by atomic force microscopy, could be established. Although some fulleropyrrolidines possess favorable lowest unoccupied molecular orbital levels, when compared to the standard PC71BM, they originated OPV cells with inferior efficiencies than PC71BM-based reference cells. Fulleropyrrolidines based on C60 produced, in general, better devices than those based on C70, and we attribute this observation to the detrimental effect of the structural and energetic disorder that is present in the regioisomer mixtures of C70-based fullerenes, but absent in the C60-based fullerenes. These results provide new additional knowledge on the effect of the fullerene functionalization on the efficiency of organic solar cells.

scholarly journals Utilizing Energy Transfer in Binary and Ternary Bulk Heterojunction Organic Solar Cells

2016 ◽  
Vol 8 (32) ◽  
pp. 20928-20937 ◽  
Author(s):  
Krishna Feron ◽  
James M. Cave ◽  
Mahir N. Thameel ◽  
Connor O’Sullivan ◽  
Renee Kroon ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Ternary Bulk Heterojunction
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