scholarly journals Silver Nanoparticle-Doped Titanium Oxide Thin Films for Intermediate Layers in Organic Tandem Solar Cell

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Wanyi Nie ◽  
Robert C. Coffin ◽  
David L. Carroll
Keyword(s):  
Cell Structure ◽  
Charge Trapping ◽  
Simple Approach ◽  
Organic Photovoltaic ◽  
Ag Nanoparticle ◽  
Tandem Solar Cell ◽  
Intermediate Layers ◽  
Current Voltage ◽  
Nanoparticle Content ◽  
Interfacial Charge

In this work we investigate the Ag nanoparticle doping of TiOx used as an intermediate layer between subcells of a tandem organic photovoltaic. We use a model polymer cell structure of P3HT:TiOx:PEDOT:P3HT to observe charge-trapping effects as a function of nanoparticle content in the TiOx, as determined by the shape of the dark and illuminated current voltage curves of the devices. There is a direct correlation between the amount of Ag nanoparticles in the TiOx, and interfacial charge buildup, and charge trapping being completely mitigated at around 0.2% mol. This suggests that such doping schemes might provide a simple approach to the creation and use of TiOx layers for tandem cells.

A comparative study of charge trapping effect in p-type MoTe2 and WSe2 FETs using pulsed current–voltage measurements

2021 ◽  
Vol 60 (1) ◽  
pp. 011003
Author(s):  
Jeong Yong Yang ◽  
Chan Ho Lee ◽  
Young Taek Oh ◽  
Jiyeon Ma ◽  
Junseok Heo ◽  
...  
Keyword(s):  
Comparative Study ◽  
Charge Trapping ◽  
Pulsed Current ◽  
Trapping Effect ◽  
Current Voltage ◽  
P Type

Evidence of Hysteresis in a New p-i-n-i-p-i-n Amorphous Silicon Device

1997 ◽  
Vol 467 ◽  
Author(s):  
D. Caputo ◽  
G. De Cesare ◽  
F. Palma
Keyword(s):  
Charge Trapping ◽  
Bistable Behavior ◽  
Novel Device ◽  
Voltage Curve ◽  
Current Voltage ◽  
Recombination Processes ◽  
Current Voltage Curve ◽  
Numerical Device ◽  
Silicon Device

ABSTRACTA novel device based on a-Si:H p+-i-n−-i-p−-i-n+ structure, showing a hysteresis in its current-voltage curve is reported. A numerical device model allows to investigate in detail the fundamental role of the two lightly doped n− and p− layers, where charge trapping determines the bistable behavior of the device. The ON condition is mantained until the ambipolar charge injection overcomes the fixed charge. The transition OFF-ON starts when, increasing the applied voltage, one of the two lightly doped layers becomes completely depleted. The transition ON-OFF is, instead, mainly dependent on the recombination processes occurring in the central doped layers. Devices with hysteresis around 2 V and tum-on voltage around 12 are presented.

scholarly journals Current-voltage characteristics of organic photovoltaic cells following deposition of cathode electrode

2010 ◽  
Vol 97 (19) ◽  
pp. 193307 ◽  
Author(s):  
Hiroyuki Saeki ◽  
Kazuto Hirohara ◽  
Yasuko Koshiba ◽  
Satoshi Horie ◽  
Masahiro Misaki ◽  
...  
Keyword(s):  
Photovoltaic Cells ◽  
Organic Photovoltaic ◽  
Organic Photovoltaic Cells ◽  
Cathode Electrode ◽  
Current Voltage ◽  
Current Voltage Characteristics

scholarly journals Influence of AlN and GaN Pulse Ratios in Thermal Atomic Layer Deposited AlGaN on the Electrical Properties of AlGaN/GaN Schottky Diodes

Coatings ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 489 ◽  
Author(s):  
Hogyoung Kim ◽  
Seok Choi ◽  
Byung Joon Choi
Keyword(s):  
Photoelectron Spectroscopy ◽  
Schottky Diodes ◽  
Charge Trapping ◽  
Negative Temperature ◽  
Atomic Layer ◽  
Algan Layer ◽  
Pulse Ratio ◽  
Current Voltage ◽  
Frenkel Emission ◽  
A Charge

Atomic layer deposited AlGaN with different AlN and GaN pulse ratios (2:1, 1:1, and 1:2) was used to prepare AlGaN/GaN Schottky diodes, and their current transport mechanisms were investigated using current–voltage (I–V) and capacitance–voltage (C–V) measurements. Under low reverse bias condition, the sample with the pulse ratio of 2:1 was explained by Poole–Frenkel emission and the negative temperature dependence for the sample with the pulse ratio of 1:2 was associated with the acceptor levels in the AlGaN layer. Fast interface traps at 0.24–0.29 eV were observed for the samples with the pulse ratios of 1:1 and 1:2, whereas bulk traps at ~0.34 eV were observed for the sample with the pulse ratio of 2:1. Higher trap densities were obtained from the C–V hysteresis measurements when the pulse ratios were 1:1 and 1:2, indicating the presence of a charge trapping interfacial layer. According to the X-ray photoelectron spectroscopy spectra, the pulse ratio of 2:1 was found to have less oxygen-related defects in the AlGaN layer.

Toward 20% Efficiency With a-Si // poly-Si Tandem Solar Cell

1992 ◽  
Vol 258 ◽  
Author(s):  
M. Yoshimi ◽  
W. Ma ◽  
T. Horiuchi ◽  
C. C. Lim ◽  
S. C. De ◽  
...  
Keyword(s):  
Solar Cell ◽  
High Efficiency ◽  
Low Cost ◽  
Cell Structure ◽  
Experimental Investigations ◽  
Total Efficiency ◽  
Tandem Solar Cell ◽  
Structure Variation ◽  
Technical Data ◽  
Bottom Cell

ABSTRACTA series of experimental investigations has been made on the a-Si // poly-Si tandem solar cell which is one of the most promised candidate of high cost-performance photovoltaic cell, e.g., high efficiency, low cost with almost no light induced degradation. Employing high conductivity with wide optical band gap p type microcrystalline SiC (μ-SiC) as a window material together with a-SiC as an interface buffer layer and also n type μc-Si as a back ohmic contact layer in the poly-Si based bottom cell, the conversion efficiency of 17.2 % has been obtained. Combining an optically transparent a-Si p-i-n cell as a top cell with an optical coupler between the top and the poly-Si bottom cell, a total efficiency of 20.3 % has been obtained so far on the four-terminal stacked mode structure. A systematic technical data for the optimization of cell structure variation on the developed tandem solar cells are presented and further possibility to improving the performance are discussed.

scholarly journals Ultrathin Electrolyte Membranes with PFSA-Vinylon Intermediate Layers for PEM Fuel Cells

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1730
Author(s):  
Jedeok KIM ◽  
Kazuya Yamasaki ◽  
Hitoshi Ishimoto ◽  
Yusuke Takata
Keyword(s):  
Fuel Cells ◽  
Polyvinyl Alcohol ◽  
High Current Density ◽  
Pem Fuel Cells ◽  
High Humidity ◽  
High Current ◽  
Intermediate Layers ◽  
Current Voltage ◽  
Electrolyte Membranes ◽  
Reinforcing Material

We prepared ultrathin PFSA/PFSA-vinylon/PFSA laminated electrolyte membranes (thickness = 10 μm) for fuel cells without using a reinforcing material. Nafion and Aquivion solutions were used as PFSA polymers. Vinylon was synthesized by formalizing polyvinyl alcohol. From the current-voltage measurements using ultrathin PFSA/PFSA-vinylon/PFSA membranes; the cell resistances are significantly lower than that using a 50 μm Nafion membrane. A high current density was obtained under both low- and high-humidity conditions. Ultrathin PFSA/PFSA-vinylon/PFSA laminated membranes will help to further improve the performance of PEMFCs.

Charge trapping and current–voltage bistability in InGaAs quantum wires

1996 ◽  
Vol 80 (2) ◽  
pp. 936-940 ◽  
Author(s):  
R. Cingolani ◽  
R. Rinaldi ◽  
M. De Vittorio ◽  
L. Vasanelli ◽  
A. Cola ◽  
...  
Keyword(s):  
Quantum Wires ◽  
Charge Trapping ◽  
Current Voltage

scholarly journals How the formation of interfacial charge causes hysteresis in perovskite solar cells

2018 ◽  
Vol 11 (9) ◽  
pp. 2404-2413 ◽  
Author(s):  
Stefan A. L. Weber ◽  
Ilka M. Hermes ◽  
Silver-Hamill Turren-Cruz ◽  
Christopher Gort ◽  
Victor W. Bergmann ◽  
...  
Keyword(s):  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Kelvin Probe ◽  
Time Resolved ◽  
Force Microscopy ◽  
Current Voltage ◽  
Voltage Hysteresis ◽  
Halide Perovskite ◽  
Interfacial Charge ◽  
Lead Halide

In this study, we use time-resolved Kelvin probe force microscopy to investigate current–voltage hysteresis in a hybrid lead-halide perovskite solar cell.

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