Enhancing performance of inverted polymer solar cells using two-growth ZnO nanorods

Ho, Yu-Che; Ho, Pei Yin; Lee, Hsin-Che; Chang, Sheng‐Kai; Hong, Yun-Ru; Lin, Ching−Fuh

doi:10.1016/j.solmat.2014.10.013

Cited by 17 publications

(8 citation statements)

References 44 publications

(41 reference statements)

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“…The improved device performances were ascribed to the morphology of two-growth ZnO NRs, which helps in achieving deeper and superior infiltration of the organic active layer. 238 From these results, we can conclude that, for 1D ZnO nanostructures applied in inverted PSCs, their length, density, surface morphology, and surface modification are key parameters that will significantly affect the penetration of polymers and fullerene blends and thereby affect the device performance.…”

Section: One Dimensional Zno Nanostructures For Inverted Polymer Sola...mentioning

confidence: 86%

“…15b). 238 Compared to the devices made with planar ZnO films, the PCEs of devices with the two-growth ZnO NRs are enhanced from 5.40% to 7.80% and from 7.24% to 8.01% for the PBDTTT-C-T:PC 71 BM and PTB7:PC 71 BM active layer, respectively. The improved device performances were ascribed to the morphology of two-growth ZnO NRs, which helps in achieving deeper and superior infiltration of the organic active layer.…”

Section: One Dimensional Zno Nanostructures For Inverted Polymer Sola...mentioning

confidence: 90%

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ZnO cathode buffer layers for inverted polymer solar cells

Liang

Zhang

Jiang

et al. 2015

Energy Environ. Sci.

297

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: One Dimensional Zno Nanostructures For Inverted Polymer Sola...mentioning

confidence: 86%

Section: One Dimensional Zno Nanostructures For Inverted Polymer Sola...mentioning

confidence: 90%

ZnO cathode buffer layers for inverted polymer solar cells

Liang

Zhang

Jiang

et al. 2015

Energy Environ. Sci.

297

218

View full text Add to dashboard Cite

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“…These have, to some extent, been under debate for a long time and appear to strongly depend on the nature of the solar cells considered, either the iOSCS or HSCs integrating ZnO NWs. hydrothermal growth of ZnO NWs in this respect: the first step was applied to define the density of ZnO NWs while the second step was used to lengthening the ZnO NWs while limiting their radial growth [222]. This approach led to a strong increase in the performances of the related iOSCs comprising the PBDTTT-C-T / PC71BM and PTB7 / PC 71 BM blends, resulting in the high PCE of 7.80 and 8.01 %, respectively.…”

Section: Variation Of the Growth Conditions Of Zno Nanowiresmentioning

confidence: 99%

ZnO nanowires for solar cells: a comprehensive review

et al. 2019

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As an abundant and non-toxic wide band gap semiconductor with a high electron mobility, ZnO in the form of nanowires has emerged as an important electron transporting material in a vast number of nanostructured solar cells. ZnO nanowires are grown by low-cost chemical deposition techniques and their integration into solar cells presents, in principle, significant advantages including efficient optical absorption through light trapping phenomena and enhanced charge carrier separation and collection. However, they also raise some significant issues related to the control of the interface properties and to the technological integration. The present review is intended to report a detailed analysis of the state-of-the-art of all types of nanostructured solar cells integrating ZnO nanowires, including extremely thin absorber solar cells, quantum dot solar cells, dye-sensitized solar cells, organic and hybrid solar cells, as well as halide perovskite-based solar cells.

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“…Therefore, a great deal of microwave absorbents has caused enormous focus by many researchers including ferrite, carbon fibers and conductive polymers. The nanostructured ZnO materials, as an important ntype semiconductor, have been extensively applied in various fields such as ultraviolet (UV) lasers, solar cells, gas sensors, photocatalysis [2][3][4][5] and so forth due to their special physical and chemical properties. Recently, many studies demonstrate that ZnO can be also used as a microwave absorption material.…”

Section: Introductionmentioning

confidence: 99%