Role of Contact Injection, Exciton Dissociation, and Recombination, Revealed through Voltage and Intensity Mapping of the Quantum Efficiency of Polymer:Fullerene Solar Cells

2016 ◽  
Vol 120 (19) ◽  
pp. 10146-10155 ◽  
Author(s):  
Lior Tzabari ◽  
Jian Wang ◽  
Yun-Ju Lee ◽  
Julia W. P. Hsu ◽  
Nir Tessler
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
Exciton Dissociation ◽  
Intensity Mapping

Role of the effective mass and interfacial dipoles on exciton dissociation in organic donor-acceptor solar cells

2013 ◽  
Vol 87 (15) ◽  
Author(s):  
Christian Schwarz ◽  
Steffen Tscheuschner ◽  
Johannes Frisch ◽  
Stefanie Winkler ◽  
Norbert Koch ◽  
...  
Keyword(s):  
Solar Cells ◽  
Effective Mass ◽  
Exciton Dissociation ◽  
Donor Acceptor

Unravelling the role of electron–hole pair spin in exciton dissociation in squaraine-based organic solar cells by magneto-photocurrent measurements

2018 ◽  
Vol 6 (3) ◽  
pp. 482-490 ◽  
Author(s):  
M. Klein ◽  
S. Majumdar ◽  
P. Zassowski ◽  
W. Stampor
Keyword(s):  
Solar Cells ◽  
Magnetic Fields ◽  
Electron Acceptor ◽  
Organic Solar Cells ◽  
Exciton Dissociation ◽  
Electron Hole ◽  
Photocurrent Generation ◽  
Wide Range ◽  
Electron Hole Pair

A study of photocurrent in SQ based solar cells, using a wide range of magnetic fields and temperatures, reveals that depending on the electron acceptor content, the photocurrent generation is limited by dissociation/recombination of e–h pairs or CT states.

Microcrystalline (Si,Ge):H Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Jianhua Zhu ◽  
Vikram L. Dalal
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Quantum Efficiency ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Defect Density ◽  
Cell Structure ◽  
Open Circuit ◽  
Base Layer ◽  
Ecr Plasma

AbstractWe report on the growth and properties of microcrystalline Si:H and (Si,Ge):H solar cells on stainless steel substrates. The solar cells were grown using a remote, low pressure ECR plasma system. In order to crystallize (Si,Ge), much higher hydrogen dilution (∼40:1) had to be used compared to the case for mc-Si:H, where a dilution of 10:1 was adequate for crystallization. The solar cell structure was of the p+nn+ type, with light entering the p+ layer. It was found that it was advantageous to use a thin a-Si:H buffer layer at the back of the cells in order to reduce shunt density and improve the performance of the cells. A graded gap buffer layer was used at the p+n interface so as to improve the open-circuit voltage and fill factor. The open circuit voltage and fill factor decreased as the Ge content increased. Quantum efficiency measurements indicated that the device was indeed microcrystalline and followed the absorption characteristics of crystalline ( Si,Ge). As the Ge content increased, quantum efficiency in the infrared increased. X-ray measurements of films indicated grain sizes of ∼ 10nm. EDAX measurements were used to measure the Ge content in the films and devices. Capacitance measurements at low frequencies ( ~100 Hz and 1 kHz) indicated that the base layer was indeed behaving as a crystalline material, with classical C(V) curves. The defect density varied between 1x1016 to 2x1017/cm3, with higher defects indicated as the Ge concentration increased.

On the Role of the Anchoring Unit in the Efficiency of Pyranoanthocyanin-based Dye-Sensitized Solar Cells

2019 ◽  
Author(s):  
Ana Lucia Pinto ◽  
Luis Cruz ◽  
Vânia Gomes ◽  
Hugo Cruz ◽  
Giuseppe Calogero ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Pathways toWards 30% Efficient Single‐Junction Perovskite Solar Cells and the Role of Mobile Ions

Solar RRL ◽  
2021 ◽  
Author(s):  
Jonas Diekmann ◽  
Pietro Caprioglio ◽  
Moritz H. Futscher ◽  
Vincent M. Le Corre ◽  
Sebastian Reichert ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Single Junction ◽  
Mobile Ions
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