Hicham Brine - Academia.edu (original) (raw)
Papers by Hicham Brine
Proceedings of SPIE, Jun 1, 2012
ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared ... more ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared using meniscus coating. Meniscus coating is very material efficient and leads to high quality pinhole-free films. The cells exhibit high open circuit voltages of 1 volt, only 0.8 eV below the band gap of the cyanine dye. This is one of the smallest differences reported for organic solar cells and illustrates an almost optimal donor–acceptor energy level alignment.
ACS Applied Materials & Interfaces, Sep 24, 2010
We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer laye... more We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer layer of a conjugated polyelectrolyte (CPE) sandwiched between a light emitting polymer (LEP) film and a ZnO electron injection layer. Efficacies exceeding 5 cd/A and the possibility of employing various LEPs are demonstrated. These improvements, compared to HyLEDs without any interlayer, are attributed to the redistribution of ions in the CPE film, causing hole accumulation at the CPE/LEP interfaces and enhanced electron injection from the ZnO into the electroluminescent polymer. The intrinsic air-stability of the electrodes used in HyLEDs, together with the solution processability of the ZnO/CPE/LEP system, make them interesting as potentially encapsulation-free, lowcost, light-emitting devices.
MRS Proceedings, 2013
We present normal and inverted solution processed bi-layer solar cells using cationic cyanine dye... more We present normal and inverted solution processed bi-layer solar cells using cationic cyanine dyes as the electron donor and a fullerene as the electron acceptor. The cells exhibit high open circuit voltages up to 1 volt showing the optimal alignment of donor and acceptor energy levels. We demonstrate the large effect that cyanine dye counter ions can have on the energetics of the solar cells and how the S-shaped current density vs. voltage (J-V) curves can be avoided.
Organic Electronics, 2013
We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light em... more We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light emitting diodes (HyLEDs) by introducing dopants into solutions processable metal oxides as an interfacial layer. The doped ZnO is prepared by adding ionic liquid (IL) to a precursor solution for the ZnO. In this way a heavily doped ZnO:ILs cathode was obtained that enhances the electron injection properties and assures a good wetting of the organic active materials.
Journal of Materials Chemistry, 2012
Advanced Energy Materials, Nov 20, 2012
MRS Proceedings, 2013
ABSTRACTWe present normal and inverted solution processed bi-layer solar cells using cationic cya... more ABSTRACTWe present normal and inverted solution processed bi-layer solar cells using cationic cyanine dyes as the electron donor and a fullerene as the electron acceptor. The cells exhibit high open circuit voltages up to 1 volt showing the optimal alignment of donor and acceptor energy levels. We demonstrate the large effect that cyanine dye counter ions can have on the energetics of the solar cells and how the S-shaped current density vs. voltage (J-V) curves can be avoided.
RSC Advances, 2012
ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared ... more ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared using meniscus coating. Meniscus coating is very material efficient and leads to high quality pinhole-free films. The cells exhibit high open circuit voltages of 1 volt, only 0.8 eV below the band gap of the cyanine dye. This is one of the smallest differences reported for organic solar cells and illustrates an almost optimal donor–acceptor energy level alignment.
Advanced Energy Materials, 2012
Journal of Instrumentation, 2012
ECS Transactions, 2011
On this paper the first Building Integrated Hybrid Photovoltaic (BIHPV) cell obtained on a commer... more On this paper the first Building Integrated Hybrid Photovoltaic (BIHPV) cell obtained on a commercial tile is presented. The experimental techniques used allow a future low cost development of these cells for its massive use on facades for buildings. The basic concept includes a metal projected layer as back contact with an electron injection layer of electrodeposited ZnO, an organic PBCBM/P3HT photovoltaic cell with a closing TCO thin film on top. Integration with the substrate problems have been solved and allow further work on cell performance and durability.
Organic Electronics, 2013
We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light em... more We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light emitting diodes (HyLEDs) by introducing dopants into solutions processable metal oxides as an interfacial layer. The doped ZnO is prepared by adding ionic liquid (IL) to a precursor solution for the ZnO. In this way a heavily doped ZnO:ILs cathode was obtained that enhances the electron injection properties and assures a good wetting of the organic active materials.
Nanoscale Research Letters, 2013
Different ZnO nanostructured films were electrochemically grown, using an aqueous solution based ... more Different ZnO nanostructured films were electrochemically grown, using an aqueous solution based on ZnCl 2 , on three types of transparent conductive oxides grow on commercial ITO (In 2 O 3 :Sn)-covered glass substrates: (1) ZnO prepared by spin coating, (2) ZnO prepared by direct current magnetron sputtering, and (3) commercial ITOcovered glass substrates. Although thin, these primary oxide layers play an important role on the properties of the nanostructured films grown on top of them. Additionally, these primary oxide layers prevent direct hole combination when used in optoelectronic devices. Structural and optical characterizations were carried out by scanning electron microscopy, atomic force microscopy, and optical transmission spectroscopy. We show that the properties of the ZnO nanostructured films depend strongly on the type of primary oxide-covered substrate used. Previous studies on different electrodeposition methods for nucleation and growth are considered in the final discussion.
Journal of Materials Chemistry, 2012
ACS Applied Materials & Interfaces, 2010
We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer laye... more We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer layer of a conjugated polyelectrolyte (CPE) sandwiched between a light emitting polymer (LEP) film and a ZnO electron injection layer. Efficacies exceeding 5 cd/A and the possibility of employing various LEPs are demonstrated. These improvements, compared to HyLEDs without any interlayer, are attributed to the redistribution of ions in the CPE film, causing hole accumulation at the CPE/LEP interfaces and enhanced electron injection from the ZnO into the electroluminescent polymer. The intrinsic air-stability of the electrodes used in HyLEDs, together with the solution processability of the ZnO/CPE/LEP system, make them interesting as potentially encapsulation-free, lowcost, light-emitting devices.
suyuki Morii, por haberse tomado el tiempo de leer y entender este trabajo. Sin su colaboración d... more suyuki Morii, por haberse tomado el tiempo de leer y entender este trabajo. Sin su colaboración desinteresada este trabajo no hubiera pasado de la ponencia al acto.
Journal of Materials Chemistry, 2010
ABSTRACT
Proceedings of SPIE, Jun 1, 2012
ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared ... more ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared using meniscus coating. Meniscus coating is very material efficient and leads to high quality pinhole-free films. The cells exhibit high open circuit voltages of 1 volt, only 0.8 eV below the band gap of the cyanine dye. This is one of the smallest differences reported for organic solar cells and illustrates an almost optimal donor–acceptor energy level alignment.
ACS Applied Materials & Interfaces, Sep 24, 2010
We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer laye... more We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer layer of a conjugated polyelectrolyte (CPE) sandwiched between a light emitting polymer (LEP) film and a ZnO electron injection layer. Efficacies exceeding 5 cd/A and the possibility of employing various LEPs are demonstrated. These improvements, compared to HyLEDs without any interlayer, are attributed to the redistribution of ions in the CPE film, causing hole accumulation at the CPE/LEP interfaces and enhanced electron injection from the ZnO into the electroluminescent polymer. The intrinsic air-stability of the electrodes used in HyLEDs, together with the solution processability of the ZnO/CPE/LEP system, make them interesting as potentially encapsulation-free, lowcost, light-emitting devices.
MRS Proceedings, 2013
We present normal and inverted solution processed bi-layer solar cells using cationic cyanine dye... more We present normal and inverted solution processed bi-layer solar cells using cationic cyanine dyes as the electron donor and a fullerene as the electron acceptor. The cells exhibit high open circuit voltages up to 1 volt showing the optimal alignment of donor and acceptor energy levels. We demonstrate the large effect that cyanine dye counter ions can have on the energetics of the solar cells and how the S-shaped current density vs. voltage (J-V) curves can be avoided.
Organic Electronics, 2013
We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light em... more We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light emitting diodes (HyLEDs) by introducing dopants into solutions processable metal oxides as an interfacial layer. The doped ZnO is prepared by adding ionic liquid (IL) to a precursor solution for the ZnO. In this way a heavily doped ZnO:ILs cathode was obtained that enhances the electron injection properties and assures a good wetting of the organic active materials.
Journal of Materials Chemistry, 2012
Advanced Energy Materials, Nov 20, 2012
MRS Proceedings, 2013
ABSTRACTWe present normal and inverted solution processed bi-layer solar cells using cationic cya... more ABSTRACTWe present normal and inverted solution processed bi-layer solar cells using cationic cyanine dyes as the electron donor and a fullerene as the electron acceptor. The cells exhibit high open circuit voltages up to 1 volt showing the optimal alignment of donor and acceptor energy levels. We demonstrate the large effect that cyanine dye counter ions can have on the energetics of the solar cells and how the S-shaped current density vs. voltage (J-V) curves can be avoided.
RSC Advances, 2012
ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared ... more ABSTRACT Neat bi-layer solar cells of a fullerene acceptor and a cyanine dye donor were prepared using meniscus coating. Meniscus coating is very material efficient and leads to high quality pinhole-free films. The cells exhibit high open circuit voltages of 1 volt, only 0.8 eV below the band gap of the cyanine dye. This is one of the smallest differences reported for organic solar cells and illustrates an almost optimal donor–acceptor energy level alignment.
Advanced Energy Materials, 2012
Journal of Instrumentation, 2012
ECS Transactions, 2011
On this paper the first Building Integrated Hybrid Photovoltaic (BIHPV) cell obtained on a commer... more On this paper the first Building Integrated Hybrid Photovoltaic (BIHPV) cell obtained on a commercial tile is presented. The experimental techniques used allow a future low cost development of these cells for its massive use on facades for buildings. The basic concept includes a metal projected layer as back contact with an electron injection layer of electrodeposited ZnO, an organic PBCBM/P3HT photovoltaic cell with a closing TCO thin film on top. Integration with the substrate problems have been solved and allow further work on cell performance and durability.
Organic Electronics, 2013
We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light em... more We have demonstrated a novel approach for fabricating efficient hybrid organic-inorganic light emitting diodes (HyLEDs) by introducing dopants into solutions processable metal oxides as an interfacial layer. The doped ZnO is prepared by adding ionic liquid (IL) to a precursor solution for the ZnO. In this way a heavily doped ZnO:ILs cathode was obtained that enhances the electron injection properties and assures a good wetting of the organic active materials.
Nanoscale Research Letters, 2013
Different ZnO nanostructured films were electrochemically grown, using an aqueous solution based ... more Different ZnO nanostructured films were electrochemically grown, using an aqueous solution based on ZnCl 2 , on three types of transparent conductive oxides grow on commercial ITO (In 2 O 3 :Sn)-covered glass substrates: (1) ZnO prepared by spin coating, (2) ZnO prepared by direct current magnetron sputtering, and (3) commercial ITOcovered glass substrates. Although thin, these primary oxide layers play an important role on the properties of the nanostructured films grown on top of them. Additionally, these primary oxide layers prevent direct hole combination when used in optoelectronic devices. Structural and optical characterizations were carried out by scanning electron microscopy, atomic force microscopy, and optical transmission spectroscopy. We show that the properties of the ZnO nanostructured films depend strongly on the type of primary oxide-covered substrate used. Previous studies on different electrodeposition methods for nucleation and growth are considered in the final discussion.
Journal of Materials Chemistry, 2012
ACS Applied Materials & Interfaces, 2010
We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer laye... more We have developed hybrid organic-inorganic light-emitting diodes (HyLEDs) featuring a buffer layer of a conjugated polyelectrolyte (CPE) sandwiched between a light emitting polymer (LEP) film and a ZnO electron injection layer. Efficacies exceeding 5 cd/A and the possibility of employing various LEPs are demonstrated. These improvements, compared to HyLEDs without any interlayer, are attributed to the redistribution of ions in the CPE film, causing hole accumulation at the CPE/LEP interfaces and enhanced electron injection from the ZnO into the electroluminescent polymer. The intrinsic air-stability of the electrodes used in HyLEDs, together with the solution processability of the ZnO/CPE/LEP system, make them interesting as potentially encapsulation-free, lowcost, light-emitting devices.
suyuki Morii, por haberse tomado el tiempo de leer y entender este trabajo. Sin su colaboración d... more suyuki Morii, por haberse tomado el tiempo de leer y entender este trabajo. Sin su colaboración desinteresada este trabajo no hubiera pasado de la ponencia al acto.
Journal of Materials Chemistry, 2010
ABSTRACT