Green poly-lysine as electron-extraction modified layer with over 15% power conversion efficiency and its application in bio-based flexible organic solar cells

Huang, Kai-Ting; Chen, Chih‐Ping; Jiang, Bing‐Huang; Jeng, Ru‐Jong; Chen, Wen‐Chang

doi:10.1016/j.orgel.2020.105924

Cited by 21 publications

(8 citation statements)

References 71 publications

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“…A study has reported the photodurability of low-temperature-treated ZnO (130 °C)-based OSC by insertion of the passivation layer at the interface between low-temperature-prepared ZnO and active materials; however, the reason for the improved photodurability was unclear. 41 We observed the photodegradation of active materials on ZnO 100 10nm by ACimpedance measurements and found a decrease of the degradation rate of active materials by surface modification of low-temperature-prepared ZnO. Thanks to this result, we can fabricate photostable i-OSCs, which were previously reported by us, using a low-temperature process.…”

supporting

confidence: 69%

“…Although the photodurability of OSC devices based on ZnO 100 10nm was much lower than that of high-temperature-prepared ZnO-based OSCs, probably due to differences in the surface condition of ZnOs, the surface modification of ZnO 100 10nm by trimethoxy[3-(methylamino)silane] improved the photodurability of the resulting OSCs. A study has reported the photodurability of low-temperature-treated ZnO (130 °C)-based OSC by insertion of the passivation layer at the interface between low-temperature-prepared ZnO and active materials; however, the reason for the improved photodurability was unclear . We observed the photodegradation of active materials on ZnO 100 10nm by AC-impedance measurements and found a decrease of the degradation rate of active materials by surface modification of low-temperature-prepared ZnO.…”

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confidence: 71%

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Study on Properties of Low-Temperature-Prepared Zinc Oxide-Based Inverted Organic Solar Cells and Improvement of their Photodurability

Nakano

Nakagawa

Sato

et al. 2021

ACS Appl. Energy Mater.

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The power conversion efficiency (PCE) of organic solar cells (OSCs) has improved steadily thanks to aggressive research and development efforts. On the other hand, improvement of device durability of OSCs is also an important factor for the practical application of OSCs. In this work, we studied the photodurability of inverted OSCs (i-OSCs) with ZnO prepared at 100 and 250 °C (ZnO 100 and ZnO 250 ). The photodurability of the ZnO 100 -based i-OSCs is much poorer than that of ZnO 250 -based ones. This could have originated from the higher photocatalytic activity of ZnO 100 , which relates to the number of surface OH groups and adsorbed water species. To suppress the photocatalytic activity of ZnO 100 , we fabricated a self-assembled monolayer (SAM) on the surface of ZnO 100 and found that the photodurability of the surface-treated ZnO 100 -based i-OSC was improved. This result indicated that the photodurability of i-OSC can be influenced by the surface conditions of ZnO and can be improved by SAM modification.

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confidence: 69%

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confidence: 71%

Study on Properties of Low-Temperature-Prepared Zinc Oxide-Based Inverted Organic Solar Cells and Improvement of their Photodurability

Nakano

Nakagawa

Sato

et al. 2021

ACS Appl. Energy Mater.

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“…The incorporation of bio‐modifiers reduces surface defects and improves conductivity 35 . It helps to tune the work function of the CIL, which enhances the charge transfer 36–38 . These studies demonstrate that applying bio‐derived materials as the modifiers for the existing CIL is a feasible and low cost approach to achieve highly efficient OSCs.…”

Section: Introductionmentioning

confidence: 77%

Environmentally friendly cathode interlayer modification on edible bio‐acids with enhanced electron extraction and improved power conversion efficiency

Wen

Lin

et al. 2022

EcoMat

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Realizing environmental compatibility and high power conversion efficiency (PCE) are crucial in the research of organic photovoltaics towards practical application. Applying environmentally friendly bio-materials into the modification of cathode interlayer (CIL) is a feasible approach to move towards both targets. In this research, three edible bio-acids, ursolic acid, citric acid, and malic acid, are employed to modify the PDIN CIL of the organic solar cells (OSCs) with non-fullerene acceptors. Among these edible bio-acid modifiers, ursolic acid shows its excellent performance in improving interfacial contact and suppressing charge recombination. It helps to obtain a good interfacial contact and facilitates the electron extraction. As a result, the photovoltaic performance is significantly improved. The average PCE are increased from 17.58% of the control devices to 18.35% of the PDIN + Ursolic Acid based devices, with a maximum PCE of 18.54%. It is the champion efficiency among the reported applications of bio-derived materials for the CILs. This study demonstrates the successful application of edible bio-acid, which offers an effective and green approach for the CIL modification to realize highly efficient OSCs.cathode interlayer, edible bio-acid, organic solar cell, PDIN | INTRODUCTIONOrganic solar cells (OSCs) own unique merits such as lightweight, high degree of flexibility and ease of possessing, which is a promising renewable technology. In the Junjie Wen and Rui Lin contributed equally to this work.

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“…One such technology is the fabrication of sensitized solar cells based on biological proteins as sensitizers, also known as bio-sensitized solar cells (BSSCs). However, BSSC technology faces many challenges to become commercially competitive, including the enhancement of photocurrent generation, improvement of conversion efficiencies, flexibility, scaling, and long-term stability [ 58 , 85 , 86 , 87 ]. Many BSSC studies only report the photocurrent of the cells studied, and do not include more detailed studies on conversion efficiencies, and rarely demonstrate stability over time.…”

Section: Discussionmentioning

confidence: 99%

PEDOT-Carbon Nanotube Counter Electrodes and Bipyridine Cobalt (II/III) Mediators as Universally Compatible Components in Bio-Sensitized Solar Cells Using Photosystem I and Bacteriorhodopsin

Teodor

Monge

Aguilar

et al. 2022

IJMS

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In nature, solar energy is captured by different types of light harvesting protein–pigment complexes. Two of these photoactivatable proteins are bacteriorhodopsin (bR), which utilizes a retinal moiety to function as a proton pump, and photosystem I (PSI), which uses a chlorophyll antenna to catalyze unidirectional electron transfer. Both PSI and bR are well characterized biochemically and have been integrated into solar photovoltaic (PV) devices built from sustainable materials. Both PSI and bR are some of the best performing photosensitizers in the bio-sensitized PV field, yet relatively little attention has been devoted to the development of more sustainable, biocompatible alternative counter electrodes and electrolytes for bio-sensitized solar cells. Careful selection of the electrolyte and counter electrode components is critical to designing bio-sensitized solar cells with more sustainable materials and improved device performance. This work explores the use of poly (3,4-ethylenedioxythiophene) (PEDOT) modified with multi-walled carbon nanotubes (PEDOT/CNT) as counter electrodes and aqueous-soluble bipyridine cobaltII/III complexes as direct redox mediators for both PSI and bR devices. We report a unique counter electrode and redox mediator system that can perform remarkably well for both bio-photosensitizers that have independently evolved over millions of years. The compatibility of disparate proteins with common mediators and counter electrodes may further the improvement of bio-sensitized PV design in a way that is more universally biocompatible for device outputs and longevity.

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Green poly-lysine as electron-extraction modified layer with over 15% power conversion efficiency and its application in bio-based flexible organic solar cells

Cited by 21 publications

References 71 publications

Study on Properties of Low-Temperature-Prepared Zinc Oxide-Based Inverted Organic Solar Cells and Improvement of their Photodurability

Study on Properties of Low-Temperature-Prepared Zinc Oxide-Based Inverted Organic Solar Cells and Improvement of their Photodurability

Environmentally friendly cathode interlayer modification on edible bio‐acids with enhanced electron extraction and improved power conversion efficiency

PEDOT-Carbon Nanotube Counter Electrodes and Bipyridine Cobalt (II/III) Mediators as Universally Compatible Components in Bio-Sensitized Solar Cells Using Photosystem I and Bacteriorhodopsin

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