Conventional Electron Microscopy and Electron Holography of Organic Solar Cells

2004 ◽  
Vol 14 (7) ◽  
pp. 669-676 ◽  
Author(s):  
P. Simon ◽  
B. Maennig ◽  
H. Lichte
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Electron Holography ◽  
Conventional Electron Microscopy

Nanomorphology of P3HT:PCBM-based Organic Solar Cells Analyzed by Low-Energy Scanning Transmission Electron Microscopy

2012 ◽  
Vol 18 (S2) ◽  
pp. 1234-1235 ◽  
Author(s):  
M. Pfaff ◽  
E. Müller ◽  
P. Müller ◽  
D. Gerthsen ◽  
M.G. Klein ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Scanning Transmission Electron Microscopy ◽  
Low Energy ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Electron Microscopy of Organic Solar Cells Thermally Stabilized with Fullerene Nucleating Agents

2014 ◽  
Vol 20 (S3) ◽  
pp. 398-399
Author(s):  
Stefan Gustafsson ◽  
Olof Bäcke ◽  
Samira Nik ◽  
Anke Sanz-Velasco ◽  
Camilla Lindqvist ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Nucleating Agents

scholarly journals Unraveling the Complex Nanomorphology of Ternary Organic Solar Cells with Multimodal Analytical Transmission Electron Microscopy

Solar RRL ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 2000114
Author(s):  
Stefanie Rechberger ◽  
Nicola Gasparini ◽  
Ranbir Singh ◽  
Min Kim ◽  
Christos L. Chochos ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Analytical Transmission Electron Microscopy ◽  
Transmission Electron

Energy-Filtered Backscattered Imaging Using Low-Voltage Scanning Electron Microscopy: Characterizing Blends of ZnPc-C60for Organic Solar Cells

2016 ◽  
Vol 18 (6) ◽  
pp. 913-917 ◽  
Author(s):  
Aránzazu Garitagoitia Cid ◽  
Mona Sedighi ◽  
Markus Löffler ◽  
Willem F. van Dorp ◽  
Ehrenfried Zschech
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Low Voltage ◽  
Voltage Scanning ◽  
Scanning Electron

scholarly journals Visualization of Hierarchical Nanodomains in Polymer/Fullerene Bulk Heterojunction Solar Cells

2014 ◽  
Vol 20 (5) ◽  
pp. 1507-1513 ◽  
Author(s):  
Jianguo Wen ◽  
Dean J. Miller ◽  
Wei Chen ◽  
Tao Xu ◽  
Luping Yu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Bulk Heterojunction ◽  
Amorphous Material ◽  
Bulk Heterojunctions ◽  
Heterojunction Solar Cells ◽  
Multiple Length Scales ◽  
Photovoltaic Films

AbstractTraditional electron microscopy techniques such as bright-field imaging provide poor contrast for organic films and identification of structures in amorphous material can be problematic, particularly in high-performance organic solar cells. By combining energy-filtered corrected transmission electron microscopy, together with electron energy loss and X-ray energy-dispersive hyperspectral imaging, we have imaged PTB7/PC61BM blended polymer optical photovoltaic films, and were able to identify domains ranging in size from several hundred nanometers to several nanometers in extent. This work verifies that microstructural domains exist in bulk heterojunctions in PTB7/PC61BM polymeric solar cells at multiple length scales and expands our understanding of optimal device performance providing insight for the design of even higher performance cells.

Fabrication and Characterization of Fullerene / Dibenzo-Tetrathiafulvalene Solar Cells

2011 ◽  
Vol 688 ◽  
pp. 80-84 ◽  
Author(s):  
Atsushi Suzuki ◽  
Katsuya Yano ◽  
Takeo Oku
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
X Ray ◽  
Bulk Heterojunction Solar Cell ◽  
Transmission Electron ◽  
Fabrication And Characterization

Fabrication and characterization of fullerene (C60) / dibenzotetrathiafulvalene (DBTTF) solar cells were carried out. Photovoltaic and optical properties of the organic solar cells were investigated. Transmission electron microscopy, x-ray and electron diffraction confirmed that the bulk heterojunction thin films had microstructure of C60 crystal phase in DBTTF amorphous phase. The photovoltaic performance of the bulk heterojunction solar cell would be originated in the extent of electron diffusion across interface around the microstructure. Photovoltaic mechanism was discussed on the basis of experimental results.

scholarly journals Spiky Durian-Shaped Au@Ag Nanoparticles in PEDOT:PSS for Improved Efficiency of Organic Solar Cells

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5591
Author(s):  
Muheeb Ahmad Alkhalayfeh ◽  
Azlan Abdul Aziz ◽  
Mohd Zamir Pakhuruddin ◽  
Khadijah Mohammedsaleh M. Katubi
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Hole Transport ◽  
Transport Layer ◽  
Electrical Performance ◽  
Localized Surface Plasmon ◽  
Hole Transport Layer ◽  
Ag Nps ◽  
Vis Spectroscopy

The localized surface plasmon resonance (LSPR) effects of nanoparticles (NPs) are effective for enhancing the power conversion efficiency (PCE) of organic solar cells (OSCs). In this study, spiky durian-shaped Au@Ag core-shell NPs were synthesized and embedded in the hole transport layer (HTL) (poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS)) of PTB7:PC71BM bulk-heterojunction OSCs. Different volume ratios of PEDOT:PSS-to-Au@Ag NPs (8%, 10%, 12%, 14%, and 16%) were prepared to optimize synthesis conditions for increased efficiency. The size properties and surface morphology of the NPs and HTL were analyzed using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). UV–Vis spectroscopy and current density–voltage (J-V) analysis were used to investigate the electrical performance of the fabricated OSCs. From the results, we observed that the OSC with a volume ratio of 14% (PEDOT:PSS–to–Au@Ag NPs) performed better than others, where the PCE was improved from 2.50% to 4.15%, which is a 66% increase compared to the device without NPs.

scholarly journals Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends

2020 ◽  
Vol 13 (4) ◽  
pp. 1259-1268 ◽  
Author(s):  
Wolfgang Köntges ◽  
Pavlo Perkhun ◽  
Jochen Kammerer ◽  
Riva Alkarsifi ◽  
Uli Würfel ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Analytical Electron Microscopy ◽  
Photocurrent Generation ◽  
Analytical Electron

Analytical electron microscopy reveals local molecular arrangements of PBDB-T:ITIC determining performance of current organic solar cells.

Nanomorphology of P3HT:PCBM-Based Absorber Layers of Organic Solar Cells after Different Processing Conditions Analyzed by Low-Energy Scanning Transmission Electron Microscopy

2012 ◽  
Vol 18 (6) ◽  
pp. 1380-1388 ◽  
Author(s):  
Marina Pfaff ◽  
Michael F.G. Klein ◽  
Erich Müller ◽  
Philipp Müller ◽  
Alexander Colsmann ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Molecular Weight ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Scanning Transmission Electron Microscopy ◽  
Low Energy ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

AbstractIn this study the nanomorphology of P3HT:PC61BM absorber layers of organic solar cells was studied as a function of the processing parameters and for P3HT with different molecular weight. For this purpose we apply scanning transmission electron microscopy (STEM) at low electron energies in a scanning electron microscope. This method exhibits sensitive material contrast in the high-angle annular dark-field (HAADF) mode, which is well suited to distinguish materials with similar densities and mean atomic numbers. The images taken with low-energy HAADF STEM are compared with conventional transmission electron microscopy and atomic force microscopy images to illustrate the capabilities of the different techniques. For the interpretation of the low-energy HAADF STEM images, a semiempirical equation is used to calculate the image intensities. The experiments show that the nanomorphology of the P3HT:PC61BM blends depends strongly on the molecular weight of the P3HT. Low-molecular-weight P3HT forms rod-like domains during annealing. In contrast, only small globular features are visible in samples containing high-molecular-weight P3HT, which do not change significantly after annealing at 150°C up to 30 min.

Features of the Fine Structure of the Active Layers of Organic Solar Cells

2016 ◽  
Vol 712 ◽  
pp. 176-181
Author(s):  
Alexander I. Smirnov ◽  
Natalya V. Plotnikova ◽  
Vladimir G. Burov ◽  
Nikita V. Martyushev
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Fine Structure ◽  
Thermal Treatment ◽  
Organic Solar Cells ◽  
Crystalline Phase ◽  
Active Layers ◽  
Transmission Electron ◽  
Diffusion Redistribution

The article is devoted to investigation of fine structure of the active layers of organic solar cells. By using atomic forth microscopy (AFM) and transmission electron microscopy (TEM) it is clearly shown that thermal treatment of active layers at 150 °C for 10 minutes leads to increasing their crystallinity. During annealing processes of diffusion redistribution of the film components are activated, and this is accompanied by both the growth of the original crystalline phase and the formation of new crystals.

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