The role of the probe tip material in distinguishing p- and n-type domains in bulk heterojunction solar cells by atomic force microscopy based methods

2019 ◽  
Vol 125 (18) ◽  
pp. 185305 ◽  
Author(s):  
M. Kratzer ◽  
O. P. Dimitriev ◽  
A. N. Fedoryak ◽  
N. M. Osipyonok ◽  
P. Balaz ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Force Microscopy ◽  
Bulk Heterojunction Solar Cells ◽  
Atomic Force

Second-Generation Azafullerene Monoadducts as Electron Acceptors in Bulk Heterojunction Solar Cells

Synthesis ◽  
2018 ◽  
Vol 50 (04) ◽  
pp. 764-771 ◽  
Author(s):  
Lluis Marsal ◽  
Max von Delius ◽  
Michael Bothe ◽  
María Montero-Rama ◽  
Aurélien Viterisi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Electron Acceptors ◽  
Structure Property ◽  
Heterojunction Solar Cells ◽  
Force Microscopy ◽  
Bulk Heterojunction Solar Cells ◽  
Atomic Force ◽  
Alkyl Substitution ◽  
The One

Four new azafullerene monoadducts (DPS-C59N, HDP-C59N, DBOP-C59N, DHOP-C59N) have been prepared and applied as electron acceptors in solution-processed bulk heterojunction solar cells. The four compounds were designed so that their solubility in organic solvents was maximized and that structure–property comparisons could be drawn with a previously synthesized azafullerene electron acceptor. With the photovoltaic devices that were prepared from the four aza­fullerenes and polymeric electron donor PTB7 we found that only one of the four new electron acceptors resulted in a power conversion efficiency that exceeded the one observed with a previously reported aza­fullerene monoadduct. Atomic force microscopy and electron mobility measurements suggest that azafullerenes bearing two alkyl chains lead to non-optimal film morphologies as well as electron mobilities and that future efforts should focus on single n-alkyl substitution.

scholarly journals The role of cation and anion dopant incorporated into a ZnO electron transporting layer for polymer bulk heterojunction solar cells

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37714-37723 ◽  
Author(s):  
Soyeon Kim ◽  
Jaehoon Jeong ◽  
Quoc Viet Hoang ◽  
Joo Won Han ◽  
Adi Prasetio ◽  
...  
Keyword(s):  
Solar Cells ◽  
Work Function ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Conductivity Change ◽  
Polymer Bulk ◽  
Electron Transporting Layer

The role of cation and anion dopant incorporated into a ZnO layer was systematically investigated. We found that the work function was changed to favor electronic extraction only with Cl anion, while the conductivity change depended on the cation.

scholarly journals Optimization of solution-processed oligothiophene:fullerene based organic solar cells by using solvent additives

2013 ◽  
Vol 4 ◽  
pp. 680-689 ◽  
Author(s):  
Gisela L Schulz ◽  
Marta Urdanpilleta ◽  
Roland Fitzner ◽  
Eduard Brier ◽  
Elena Mena-Osteritz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Heterojunction Solar Cells ◽  
Force Microscopy ◽  
Vacuum Technology ◽  
Atomic Force ◽  
Donor And Acceptor ◽  
Conversion Efficiencies

The optimization of solution-processed organic bulk-heterojunction solar cells with the acceptor-substituted quinquethiophene DCV5T-Bu 4 as donor in conjunction with PC61BM as acceptor is described. Power conversion efficiencies up to 3.0% and external quantum efficiencies up to 40% were obtained through the use of 1-chloronaphthalene as solvent additive in the fabrication of the photovoltaic devices. Furthermore, atomic force microscopy investigations of the photoactive layer gave insight into the distribution of donor and acceptor within the blend. The unique combination of solubility and thermal stability of DCV5T-Bu 4 also allows for fabrication of organic solar cells by vacuum deposition. Thus, we were able to perform a rare comparison of the device characteristics of the solution-processed DCV5T-Bu 4 :PC61BM solar cell with its vacuum-processed DCV5T-Bu 4 :C60 counterpart. Interestingly in this case, the efficiencies of the small-molecule organic solar cells prepared by using solution techniques are approaching those fabricated by using vacuum technology. This result is significant as vacuum-processed devices typically display much better performances in photovoltaic cells.

Plasmonic Bulk Heterojunction Solar Cells: The Role of Nanoparticle Ligand Coating

ACS Photonics ◽  
2015 ◽  
Vol 2 (6) ◽  
pp. 714-723 ◽  
Author(s):  
Emmanuel Kymakis ◽  
George D. Spyropoulos ◽  
Rute Fernandes ◽  
George Kakavelakis ◽  
Antonios G. Kanaras ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

scholarly journals The Role of Photon Energy in Free Charge Generation in Bulk Heterojunction Solar Cells

2014 ◽  
Vol 4 (18) ◽  
pp. 1400416 ◽  
Author(s):  
Daniele Di Nuzzo ◽  
L. Jan Anton Koster ◽  
Veronique S. Gevaerts ◽  
Stefan C. J. Meskers ◽  
René A. J. Janssen
Keyword(s):  
Solar Cells ◽  
Photon Energy ◽  
Bulk Heterojunction ◽  
Free Charge ◽  
Charge Generation ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Electrochemical and atomic force microscopy investigations of the effect of CdS on the local electrical properties of CH3NH3PbI3:CdS perovskite solar cells

2017 ◽  
Vol 5 (46) ◽  
pp. 12112-12120 ◽  
Author(s):  
Mingxuan Guo ◽  
Fumin Li ◽  
Lanyu Ling ◽  
Chong Chen
Keyword(s):  
Atomic Force Microscopy ◽  
Solar Cells ◽  
Electrochemical Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Bulk Heterojunction ◽  
Perovskite Solar Cells ◽  
Kelvin Probe ◽  
Conductive Atomic Force Microscopy ◽  
Force Microscopy ◽  
Atomic Force

The effect of the incorporated CdS on the local optoelectronic properties of CH3NH3PbI3:CdS bulk heterojunction (BHJ) perovskite solar cells (PSCs) are studied using Kelvin probe force microscopy (KPFM), conductive atomic force microscopy (c-AFM) and electrochemical impedance spectroscopy (EIS).

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