Ligand‐Free Synthesis of Aluminum‐Doped Zinc Oxide Nanocrystals and their Use as Optical Spacers in Color‐Tuned Highly Efficient Organic Solar Cells

Gaceur, Mériem; Dkhil, Sadok Ben; Duché, David; Bencheikh, Fatima; Simon, Jean‐Jacques; Escoubas, Ludovic; Mansour, Mahdi; Guerrero, Antonio; García-Belmonte, Germà; Liu, Xianjie; Fahlman, Mats; Dachraoui, Walid; Diallo, Abdou Karim; Videlot‐Ackermann, Christine; Margeat, Olivier; Ackermann, Jörg

doi:10.1002/adfm.201502929

Cited by 50 publications

(63 citation statements)

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“…The work functioni s4 .08 eV with conduction band energyo f3 .79 eV and ionization potential of 7.87 eV as determined in Ref. [14].T hese values suggest that AZO is ap romising candidate to be used as an electronselectivel ayer in organic photoelectrochemicald evices anda n illustrative energy diagram of the full device is showeda sF igure 2a.A verage mobility values of m = 210 À5 cm 2 Vs À1 were extracted from field-effect transistors measurements (see Figures SI2 andS I3 for details). Although this is not an extremely high value, it is adequate to be used in devicesw ith af ew tens of nanometers.…”

Section: Introductionmentioning

confidence: 53%

“…The work function is 4.08 eV with conduction band energy of 3.79 eV and ionization potential of 7.87 eV as determined in Ref. . These values suggest that AZO is a promising candidate to be used as an electron‐selective layer in organic photoelectrochemical devices and an illustrative energy diagram of the full device is showed as Figure a.…”

Section: Introductionmentioning

confidence: 53%

“…The AZO nanocrystals were chemically synthesized through a solution approach that does not require bulky insulating ligands as surfactants, allowing the formation of thin films at a low 85 °C annealing temperature with improved conductivity compared to ZnO . Figure a shows a TEM image of the AZO nanoparticles and Figure b shows an AZO film observed by SEM.…”

Section: Introductionmentioning

confidence: 99%

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Direct Hydrogen Evolution from Saline Water Reduction at Neutral pH using Organic Photocathodes

et al. 2016

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Here, we have developed an organic photocathode for water reduction to H , delivering more than 1 mA cm at 0 V versus RHE and above 3 mA cm at -0.5 V versus RHE with moderate stability under neutral pH conditions. The initial competitive reduction of water to H and ZnO to metallic Zn is responsible for the dynamic behaviour of both photocurrent and Faradaic efficiency of the device, which reaches 100 % Faradaic efficiency after 90 min operation. In any case, outstanding stable H flow of approximately 2 μmol h is measured over 1 h at 0 V versus RHE and at neutral pH, after equilibrium between the Zn /Zn concentration in the AZO film is reached. This achievement opens new avenues for the development of allsolution-processed organic photoelectrochemical cells for the solar generation of H from sea water.

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Section: Introductionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

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Direct Hydrogen Evolution from Saline Water Reduction at Neutral pH using Organic Photocathodes

et al. 2016

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“…By modulating the thickness of transparent ILs, it is possible to enhance photocurrent via the optical spacer effect . Optical spacer ILs can improve the spatial distribution of light inside the solar cell and thus enhance photon absorption within the photoactive layer . Park et al demonstrated a device based on an active BHJ composite of poly(( N ‐9'‐heptadecanyl‐2,7‐carbazole)‐ alt ‐(5,5‐(4',7'‐di‐2‐thienyl‐2',1',3'‐benzothiadiazole))) ( PCDTBT )/ PC 71 BM , which had an internal quantum efficiency close to 100% upon the addition of a TiO x optical spacer layer and a PCE of 6% .…”

Section: Role Of the Interfacial Layermentioning

confidence: 99%

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Houston

Richeter

Clément

et al. 2017

Polymer International

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In the past two decades, bulk heterojunction organic photovoltaic (OPV) devices have emerged as attractive candidates for solar energy conversion due to their lightweight design and potential for low‐cost, high‐throughput, solution‐phase processability. Interfacial engineering is a proven efficient approach to achieve OPV devices with high power conversion efficiencies. This mini‐review provides an overview of the key structural considerations necessary when undertaking the molecular design of conjugated polyelectrolytes, for application as interfacial layers (ILs). The different roles of ILs are outlined, together with the advantages and disadvantages of competing classes of IL materials. Particular emphasis is placed on the design and synthesis of water‐soluble polythiophene‐based IL materials and the influence of their structural characteristics on their performance as a promising class of IL material. Finally, the challenges and opportunities for polythiophenes as IL materials for OPV devices and other solution‐processed solar cell technologies (e.g. perovskite solar cells) are discussed. © 2017 Society of Chemical Industry

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“…An efficient ETL with thickness over 600 nm can be prepared at low temperature (140 °C) without significantly drawing down PCE. In addition, Gaceur et al also report Al:ZnO nanocrystal as efficient ETL without high‐temperature annealing 70a. With the Al doping, the nanocrystals not only exhibit improved conductivity but also show good film formation for a smooth thin film, which together contribute to a higher PCE of 7.56% compared to that of undoped ZnO of 5.86% in PTB7:PCBM based organic SCs.…”

Section: Recent Progress Of Solution‐processed Ternary Oxide–based Ctlsmentioning

confidence: 99%

Solution‐Processed Ternary Oxides as Carrier Transport/Injection Layers in Optoelectronics

Huang

Ouyang

Shih

et al. 2019

Advanced Energy Materials

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With the remarkable progress in solution‐processed optoelectronics, high performance is required of the carrier transport/injection layer. Ternary oxides containing a variety of crystal structures, and adjustable composition that results in tunable optical and electrical properties, are one of the promising class of candidates to fulfill the requirements of carrier transport/injection layers for high‐performance and stable optoelectronic devices. Solution‐processed ternary oxides have seen considerable progress in recent decades, due to their advantages in the quest to design low‐cost, high‐performance, large‐scale, and stable optoelectronic devices. Herein, the recent advances of solution‐processed ternary oxides are reviewed. The first section consists of a brief introduction to the topic. In the following section, the fundamentals of the effect of tuning ternary oxide composition are summarized. Section three briefly reviews the synthesis approaches for preparing ternary oxides. Section four discusses the recent progress of solution‐processed ternary oxide as carrier transport/injection layer in optoelectronic devices (such as organic solar cells, perovskite solar cells, organic light emitting diodes, etc.). In this section, the impact of controlling ternary oxide composition on device performance and stability is highlighted. Finally, a brief summary and an outlook are given.

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Ligand‐Free Synthesis of Aluminum‐Doped Zinc Oxide Nanocrystals and their Use as Optical Spacers in Color‐Tuned Highly Efficient Organic Solar Cells

Cited by 50 publications

References 47 publications

Direct Hydrogen Evolution from Saline Water Reduction at Neutral pH using Organic Photocathodes

Direct Hydrogen Evolution from Saline Water Reduction at Neutral pH using Organic Photocathodes

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Solution‐Processed Ternary Oxides as Carrier Transport/Injection Layers in Optoelectronics

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