ZnO thin films fabricated by chemical bath deposition, used as buffer layer in organic solar cells

Lare, Yendoubé; Godoy, A.; Cattin, Linda; Jondo, Koffi; Abachi, T.; Díaz, F. R.; Morsli, M.; Napo, Kossi; Valle, M. A. del; Bérnède, J.C.

doi:10.1016/j.apsusc.2009.02.054

Cited by 39 publications

(15 citation statements)

References 25 publications

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“…77 Such a difference in the J-V curve was attributed to the converse directions of charge transport, suggesting the function of ZnO CBL in transporting electrons and blocking holes. 77 158,159 (9) fine-channel mist-spray coating, 160 (10) chemical bath deposition (CBD), 161 and (11) electro-deposition (ED) 43 . Among these methods, the solution processing and deposition methods have been the most popular way to make ZnO CBLs for inverted PCSs, due to its high-quality, ease of preparation at relatively low temperature, without requiring any vacuum instrument and low cost.…”

Section: Zno a Good Fit For Cbl In Inverted Pscsmentioning

confidence: 99%

ZnO cathode buffer layers for inverted polymer solar cells

Liang

Zhang

Jiang

et al. 2015

Energy Environ. Sci.

289

218

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This article provides an overview on the design, fabrication and characterization of the most widely used cathode buffer layers (CBLs) constructed with pristine zinc oxide (ZnO), doped-ZnO, and ZnO-based composites as well as the surface modified ZnO-based CBLs for the improvement of power conversion efficiency (PCE) and long-term device stability of inverted polymer solar cells (PSCs). To achieve high PCE in inverted PSCs, the selection of an appropriate material to form the high quality CBL so as to optimize the electron collection and transport is particularly important. Among the different materials for CBL in inverted PSCs, ZnO has attracted most extensive research in view of its relatively high electron mobility, optical transparency, ease synthesis with versatile morphologies via low cost solution methods at low temperatures, and being environmentally stable. The research has revealed that the electronic processes at the interface between ZnO CBL and polymer active layer play an important role in determining the solar cells performance, and such processes are related to the ZnO CBL in terms of its morphology, microstructure, doping and surface modification. This review attempts to give a general review to better understand the impacts of (1) morphology, (2) thickness, (3) nanostructures, (4) doping, (5) surface modification and (6) composition/hybrids of ZnO CBLs on the solar cells performance. The fundamental understanding of the rapid progress of interfacial engineering made in PSCs would also be beneficial to the development of perovskite solar cells due to similar energy level and device structures.Fig. 12 (a) Schematic illustration of device structure with ZnMgO CBL. (b) Energy levels of the components in the inverted PSCs with various ZMO CBLs. (c) Optical absorption spectra of ZMO films. The inset shows an increase in the bandgap of ZMO films with the increasing of Mg content (x). (d) J-V curve of the device with the ZMO ( x = 0.3) CBL. 48 Fig. 13 (a) Chemical structures of PTB7-Th, PC 71 BM and BisNPC60-OH, (b) Schematic illustration of the proposed cathode interlayer from XPS depth profile; (c) Energy levels diagram for ZnO, InZnO, ZnO-BisC60 and InZnO-BisC60 determined from ultraviolet photoelectron spectroscopy (UPS) and UV-Vis results and for all the components in the inverted PSCs.

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Section: Zno a Good Fit For Cbl In Inverted Pscsmentioning

confidence: 99%

ZnO cathode buffer layers for inverted polymer solar cells

Liang

Zhang

Jiang

et al. 2015

Energy Environ. Sci.

289

218

View full text Add to dashboard Cite

show abstract

“…Prior to deposition of the ZnO buffer layer, we etched ITO films with the electrode pattern (an active area of 0.125 cm 2 ) using a wet-etching process with HCl/HNO mixtures. After successive cleaning with acetone, methanol Thin Solid Films 547 (2013) [3][4][5][6][7][8] and deionized water for 10 min in an ultrasonic bath, the samples were dried in flowing nitrogen gas. The ZnO films used as the buffer layer in the IOSCs were deposited on the patterned ITO using unbalanced magnetron (UBM) sputtering.…”

Section: Methodsmentioning

confidence: 99%

“…M. S. White et al [4] has proposed the inverted bulk-heterojunction organic photovoltaic device using a solution-derived ZnO underlayer and reported the cell performance of its device. And also, Lare et al [5] has reported the cell performance in organic solar cell using ZnO synthesized by chemical bath deposition method. Although the DC/RF sputter grown ZnO or solution based ZnO film has been widely employed as a buffer layer, the IOSC with unbalanced magnetron (UBM) sputter grown ZnO buffer layer have not been investigated in detail.…”

Section: Introductionmentioning

confidence: 98%

Characteristics of sputtered ZnO films for buffer layer in inverted organic solar cells

2013

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“…Zinc oxide has a distinctive position among materials and its thin films have shown potential in many optoelectronic, electrical and electronic applications namely for transparent conducting films [2], solar cell materials [3], light emitting devices [4], gas sensors [5] and surface acoustic wave devices [6].…”

Section: Introductionmentioning

confidence: 99%