Ternary blend organic solar cells with improved morphological stability

Nam, Minwoo; Yoo, Jaehong; Park, Yunjae; Noh, Hye Yeon; Park, Yongkook; Cho, Junhee; Kim, Jung-A.; Kim, Jehan; Lee, Hyun Hwi; Chang, Rakwoo; Ko, Doo‐Hyun

doi:10.1039/c9ta00382g

Cited by 38 publications

(36 citation statements)

References 46 publications

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“…To present versatility of Q‐OPVs in practical applications., we additionally analyzed the thermodynamic instability behaviors of our quaternary blend, one of the most critical factors affecting longevity of OPVs since they induce aggregation within the blends, resulting in severe charge transfer yield reduction (Figure S2, Supporting Information) . The PV characteristics of eight OPVs were analyzed under thermal annealing of 60 °C which known as operational temperature under 1‐sun irradiance .…”

Section: Resultsmentioning

confidence: 99%

Semitransparent Energy‐Storing Functional Photovoltaics Monolithically Integrated with Electrochromic Supercapacitors

Cho

Yun

Noh

et al. 2020

Adv Funct Materials

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Energy‐storing functional photovoltaics, which can simultaneously harvest and store solar energy, are proposed as promising next‐generation multifunction energy systems. For the extension of conventional organic photovoltaics (OPVs), electrochromic supercapacitors (ECSs) are monolithically integrated with semitransparent (ST) quaternary blend‐based OPVs (ST Q‐OPVs) to achieve compact, energy‐efficient storage with great aesthetic appeal. In particular, ST Q‐OPVs with low‐power‐consumption ECSs allow full operation, even under low‐intensity irradiance, including artificial indoor light circumstances, and thereby exhibit potential for all‐day operating energy suppliers. The prepared ST energy‐storing functional photovoltaics also serve as a backup power source for external electronic equipment (e.g., light‐emitting diodes, and sensor nodes for Internet of Things) by consuming charged power. In addition to features that include unrestricted operation under any circumstances, color tunability, feasibility of designs with various shapes, rapid charging/discharging, and real‐time indication of stored energy levels, ST energy‐storing functional photovoltaics could potentially be applied in electronic devices such as advanced smart windows or portable smart electronics.

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Section: Resultsmentioning

confidence: 99%

Semitransparent Energy‐Storing Functional Photovoltaics Monolithically Integrated with Electrochromic Supercapacitors

Cho

Yun

Noh

et al. 2020

Adv Funct Materials

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“…revealed that the ternary blends containing fullerene and non‐fullerene acceptors could benefit from the suppressed domain growth via kinetic and thermodynamic effects during the aging process and own a more stable morphology. [ 84 ]…”

Section: Progress In Enhancing Stabilitymentioning

confidence: 99%

Progress in Stability of Organic Solar Cells

2020

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The organic solar cell (OSC) is a promising emerging low‐cost thin film photovoltaics technology. The power conversion efficiency (PCE) of OSCs has overpassed 16% for single junction and 17% for organic–organic tandem solar cells with the development of low bandgap organic materials synthesis and device processing technology. The main barrier of commercial use of OSCs is the poor stability of devices. Herein, the factors limiting the stability of OSCs are summarized. The limiting stability factors are oxygen, water, irradiation, heating, metastable morphology, diffusion of electrodes and buffer layers materials, and mechanical stress. The recent progress in strategies to increase the stability of OSCs is surveyed, such as material design, device engineering of active layers, employing inverted geometry, optimizing buffer layers, using stable electrodes and encapsulation materials. The International Summit on Organic Photovoltaic Stability guidelines are also discussed. The potential research strategies to achieve the required device stability and efficiency are highlighted, rendering possible pathways to facilitate the viable commercialization of OSCs.

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“…54,[136][137][138][139][140][141][142] Furthermore, a number of recent studies have reported improved stabilities of NFA-based ternary blends under certain environmental conditions. 75,136,[143][144][145][146] Initial reports suggest that the addition of an active third component can act to stabilise unstable binary blend morphologies, 75,146 as Zerio et al discuss in more detail. 145 However, further research efforts are required to fully elaborate the detailed mechanisms behind the improved stability of ternary OSCs under varying environmental conditions and to develop comprehensive design rules towards their improved stability.…”

Section: Ternary Strategymentioning

confidence: 99%

From fullerene acceptors to non-fullerene acceptors: prospects and challenges in the stability of organic solar cells

et al. 2019

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Ternary blend organic solar cells with improved morphological stability

Abstract: We demonstrate the improved morphological stability and lifetime of ternary organic solar cells incorporating nonfullerene small molecules in polymer:fullerene blends.

Cited by 38 publications

References 46 publications

Semitransparent Energy‐Storing Functional Photovoltaics Monolithically Integrated with Electrochromic Supercapacitors

Semitransparent Energy‐Storing Functional Photovoltaics Monolithically Integrated with Electrochromic Supercapacitors

Progress in Stability of Organic Solar Cells

From fullerene acceptors to non-fullerene acceptors: prospects and challenges in the stability of organic solar cells

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