scholarly journals Effect of Transparent Electrode on the Performance of Bulk Heterojunction Solar Cells

2010 ◽  
Vol 1270 ◽  
Author(s):  
A.A. Damitha T Adikaari ◽  
Joe Briscoe ◽  
Steve Dunn ◽  
David Carey ◽  
Ravi Silva
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Open Circuit ◽  
Fullerene Derivative ◽  
Atmospheric Conditions ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

AbstractWe present a performance comparison of polythiophene/fullerene derivative bulk heterojunction solar cells fabricated on fluorinated tin oxide (FTO) and indium tin oxide (ITO) in the presence and absence of the commonly used poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) hole extraction layer. From a potential commercial perspective the performance of cheaper and more readily available FTO compares well with the more expensive ITO in terms of measured device efficiency (FTO:2.8 % and ITO:3.1%). The devices show similar fill factors (FTO:63% and ITO:64%) with the same open circuit voltage of 0.6 V. The short circuit current density is lower for FTO devices at 7.5 mA/cm2 which compares with 8.0 mA/cm2 for ITO; a behaviour that is mainly attributed to the reduced optical transmission of the FTO layer. Importantly, these devices were part fabricated and wholly characterized under atmospheric conditions. The quoted device performance is the best reported for FTO based bulk heterojunction systems in the absence of the highly acidic PEDOT:PSS hole extraction layer, which is believed to degrade conductive oxides.

MOBILITY DEPENDENT EFFICIENCIES OF ORGANIC BULK-HETEROJUNCTION SOLAR CELLS WITH RECOMBINATION VIA TAIL

2013 ◽  
Vol 27 (28) ◽  
pp. 1350167 ◽  
Author(s):  
SHUAI ZHOU ◽  
JIU-XUN SUN
Keyword(s):  
Solar Cells ◽  
Carrier Density ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Charge Carrier Mobility ◽  
Open Circuit ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

As a suitable recombination process, recombination via tail state in organic bulk-heterojunction solar cells (OBHJs) is capable of reproducing both dark and illuminated current–voltage curves. The characteristic parameters of OBHJs based on recombination via tail are governed by transportation and extraction efficiency, and both processes are strongly dependent on the charge carrier mobility. Using a macroscopic simulation, we calculate the mobility dependent power conversion efficiency, open-circuit voltage, short-circuit current and fill factor. The open-circuit voltage is determined by not only carrier density n(p), but also by carrier density gradient. Furthermore, open-circuit voltage is more affected by majority charge carriers and less affected by minority ones.

Pyridine-functionalized fullerene additive enabling coordination interactions with CH3NH3PbI3 perovskite towards highly efficient bulk heterojunction solar cells

2019 ◽  
Vol 7 (6) ◽  
pp. 2754-2763 ◽  
Author(s):  
Jieming Zhen ◽  
Weiran Zhou ◽  
Muqing Chen ◽  
Bairu Li ◽  
Lingbo Jia ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Fullerene Derivative ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells ◽  
Highly Efficient

A novel pyridine-functionalized fullerene derivative (C60-PyP) as an additive in regular bulk heterojunction perovskite (CH3NH3Pbl3) solar cells (PSCs) enables a power conversion efficiency of 19.82% with markedly suppressed hysteresis.

Ag Doped Zinc Tin Oxide as Cathode for Organic Photovoltaic Cells

2012 ◽  
Vol 209-211 ◽  
pp. 1719-1722
Author(s):  
Ming Guo Zhang ◽  
Nan Hai Sun
Keyword(s):  
Solar Cells ◽  
Tin Oxide ◽  
Organic Solar Cells ◽  
Indium Tin Oxide ◽  
Bulk Heterojunction ◽  
Indium Tin Oxide Electrode ◽  
Heterojunction Solar Cells ◽  
Visible Part ◽  
Cell Architecture ◽  
Zinc Tin Oxide

A thin Ag layer embedded between layers of zinc tin oxide (ZTO) are compared to cells using an indium tin oxide electrode was investigated for inverted organic bulk heterojunction solar cells employing a multilayer electrode. ZTO/Ag/ ZTO (ZAZ) electrode is the preparation at room temperature, a high transparency in the visible part of the spectrum, and a very low sheet resistance comparable to treated ITO without the need for any thermal post deposition treatment as it is necessary for ITO. The In-free ZAZ electrodes exhibit a favorable work function of 4.3 eV and are shown to allow for excellent electron extraction even without a further interlayer. This renders ZAZ a perfectly suited bottom electrode for inverted organic solar cells with simplified cell architecture.

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.

scholarly journals Open-Circuit Voltage in Inverted Polycarbazole:Fullerene Bulk Heterojunction Solar Cells

2016 ◽  
Vol 6 (4) ◽  
pp. 918-923 ◽  
Author(s):  
Rania Alqurashi ◽  
Jonathan Griffin ◽  
Abdullah Alsulami ◽  
Alastair Buckley
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Open Circuit ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells
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