scholarly journals Interface Optimization via Fullerene Blends Enables Open‐Circuit Voltages of 1.35 V in CH 3 NH 3 Pb(I 0.8 Br 0.2 ) 3 Solar Cells

2021 ◽  
pp. 2003386
Author(s):  
Zhifa Liu ◽  
Johanna Siekmann ◽  
Benjamin Klingebiel ◽  
Uwe Rau ◽  
Thomas Kirchartz
Keyword(s):  
Solar Cells ◽  
Open Circuit ◽  
Open Circuit Voltages

Solar Cell Contacts Using Nano-Sized Dispersions

1999 ◽  
Vol 581 ◽  
Author(s):  
Doug Schulz ◽  
R. Ribelin ◽  
X. Wu ◽  
K.M. Jones ◽  
R.J. Matson ◽  
...  
Keyword(s):  
Solar Cells ◽  
Spray Deposition ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Cdte Layer ◽  
Open Circuit ◽  
Alloy Formation ◽  
Current Densities ◽  
P Type ◽  
Open Circuit Voltages

ABSTRACTNano-sized dispersions have been employed as precursor inks for the spray deposition of contacts to both Si and CdTe materials. In the case of Si, nano-sized Al particles (nano-Al) were dispersed and spray deposited onto p-type Si. Annealing above the eutectic temperature causes alloy formation yielding a p+ layer with p ∼ 10−4 Ω•cm. For CdTe, nano-sized Te particles (nano-Te) were dispersed and sprayed onto CdTe/CdS/SnO2/glass heterostructures. Contact to the CdTe layer occurred during a 30 min anneal in He (T = 215 to 255 °C). These solar cells were finished by spin-coating the Te layer with Ag paint and subsequently annealing in air (100 °C / 1 h). This approach produces solar cells with open circuit voltages (Voc) from 720 to 800 mV, short circuit current densities (Jsc) from 18 to 20 mA/cm2 and efficiencies up to 10.3%. The performance of these cells was similar to those produced using the standard NREL contact.

scholarly journals Analytical Models of Bulk and Quantum Well Solar Cells and Relevance of the Radiative Limit

2012 ◽  
pp. 59-77 ◽  
Author(s):  
James P. Connolly
Keyword(s):  
Solar Cells ◽  
Quantum Well ◽  
Space Charge ◽  
Radiative Recombination ◽  
Light Trapping ◽  
Open Circuit ◽  
Analytical Models ◽  
Injection Currents ◽  
Photon Recycling ◽  
Open Circuit Voltages

The analytical modelling of bulk and quantum well solar cells is reviewed. The analytical approach allows explicit estimates of dominant generation and recombination mechanisms at work in charge neutral and space charge layers of the cells. Consistency of the analysis of cell characteristics in the light and in the dark leaves a single free parameter, which is the mean Shockley-Read-Hall lifetime. Bulk PIN cells are shown to be inherently dominated by non-radiative recombination as a result of the doping related non-radiative fraction of the Shockley injection currents. Quantum well PIN solar cells on the other hand are shown to operate in the radiative limit as a result of the dominance of radiative recombination in the space charge region. These features are exploited using light trapping techniques leading to photon recycling and reduced radiative recombination. The conclusion is that the mirror backed quantum well solar cell device features open circuit voltages determined mainly by the higher bandgap neutral layers, with an absorption threshold determined by the lower gap quantum well superlattice.

scholarly journals The finale of a trilogy: comparing terpolymers and ternary blends with structurally similar backbones for use in organic bulk heterojunction solar cells

2018 ◽  
Vol 6 (39) ◽  
pp. 19190-19200 ◽  
Author(s):  
Mary Allison Kelly ◽  
Qianqian Zhang ◽  
Zhengxing Peng ◽  
Victoria Noman ◽  
Chenhui Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Bulk Heterojunction ◽  
Open Circuit ◽  
Ternary Blends ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Open Circuit Voltages

Comparing the efficiency of terpolymers vs. ternary blends, this study focuses on two polymers with structurally similar backbones (monoCNTAZ and FTAZ) yet markedly different open circuit voltages.

Ladder-type dithienocyclopentadibenzothiophene-cored wide-bandgap polymers for efficient non-fullerene solar cells with large open-circuit voltages

2019 ◽  
Vol 7 (7) ◽  
pp. 3307-3316 ◽  
Author(s):  
Qisheng Tu ◽  
Changquan Tang ◽  
Qingdong Zheng
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Open Circuit Voltages ◽  
Excellent Stability

Novel wide-bandgap copolymers based on ladder-type dithienocyclopentadibenzothiophene were developed for polymer solar cells with 9.46% efficiency and excellent stability.

scholarly journals Direct nanoscale mapping of open circuit voltages at local back surface fields for PERC solar cells

2020 ◽  
Vol 55 (25) ◽  
pp. 11501-11511
Author(s):  
Alexandra Longacre ◽  
Michael Martin ◽  
Thomas Moran ◽  
Oleg V. Kolosov ◽  
Eric Schneller ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit ◽  
Back Surface ◽  
Surface Fields ◽  
Open Circuit Voltages

Recombination in Polymer:Fullerene Solar Cells with Open-Circuit Voltages Approaching and Exceeding 1.0 V

2012 ◽  
Vol 3 (2) ◽  
pp. 220-230 ◽  
Author(s):  
Eric T. Hoke ◽  
Koen Vandewal ◽  
Jonathan A. Bartelt ◽  
William R. Mateker ◽  
Jessica D. Douglas ◽  
...  
Keyword(s):  
Solar Cells ◽  
Open Circuit ◽  
Open Circuit Voltages

Ternary organic solar cells: using molecular donor or acceptor third components to increase open circuit voltage

2019 ◽  
Vol 43 (26) ◽  
pp. 10442-10448 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Arthur D. Hendsbee ◽  
Jonathan R. Cann ◽  
Clément Cabanetos ◽  
Gregory C. Welch
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Molecular Semiconductors ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC60BM based organic photovoltaics leads to increases in open circuit-voltages and overall power conversion efficiencies.

scholarly journals How to Report Record Open‐Circuit Voltages in Lead‐Halide Perovskite Solar Cells

2019 ◽  
Vol 10 (1) ◽  
pp. 1902573 ◽  
Author(s):  
Lisa Krückemeier ◽  
Uwe Rau ◽  
Martin Stolterfoht ◽  
Thomas Kirchartz
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Halide Perovskite ◽  
Open Circuit Voltages ◽  
Lead Halide
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