Designing a ternary photovoltaic cell for indoor light harvesting with a power conversion efficiency exceeding 20%

Yin, Hang; Ho, Johnny Ka Wai; Cheung, Sin Hang; Yan, Jie; Chiu, Ka Lok; Hao, Xiaotao; So, Shu Kong

doi:10.1039/c8ta01728j

Cited by 126 publications

(95 citation statements)

References 34 publications

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“…OPVs that operate under ambient artificial lighting can be efficient electric power sources for portable electronics and wireless sensor networks . The unique properties of OPVs (for instance, low cost, flexibility, lightness, colorfulness, and semitransparency) make them very promising in this field compared to conventional PV technologies .…”

Section: Introductionmentioning

confidence: 99%

All‐Day Operating Quaternary Blend Organic Photovoltaics

Nam

Noh

Cho

et al. 2019

Adv Funct Materials

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The unique properties of organic photovoltaics (OPVs) offer great promise in emerging applications such as wearable electronics or the Internet of Things. For their successful utilization, OPV operation should be designed for versatile irradiation circumstances in addition to solar light since they should be capable of providing electric power when there is no sunlight or when they operate indoors. Here, a quaternary OPV (Q-OPV) as a semitransparent, colorful energy platform that operates efficiently under both solar and artificial light irradiation is demonstrated. The experimentally optimized Q-OPV shows a broadened spectral response and improved charge transport process with suppressed recombination, thereby providing high output powers that are sufficient to autonomously operate low-power electronic devices. In addition, the Q-OPV benefits from improved morphological stability with a reduced driving force for grain growth by the increased entropy in the quaternary blend system. The important features of the Q-OPV platform such as semitransparency, high tolerance to film thickness, and color codability, while pursuing the improved performance and thermal durability, further open new opportunities as an all-day (24/7/365) power generator in broad practical applications.

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Section: Introductionmentioning

confidence: 99%

All‐Day Operating Quaternary Blend Organic Photovoltaics

Nam

Noh

Cho

et al. 2019

Adv Funct Materials

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“…[10] For organic BHJs used as indoor light harvesters, a large open-circuit voltage (V oc ) and a low charge carrier recombination rate are the two main criteria for high device performance. [9] V oc of OPV cells can be expressed as…”

Section: Introductionmentioning

confidence: 99%

“…where ܲ ௦௨ and ܲ are the incident powers from 1-Sun and room lights, respectively, and ߠ is the fraction of light without infrared. [9] ∆ܸ depends only on the ratios of photocurrents, and is independent of the choice of materials. Therefore, to achieve a large V oc at ambient lights, a BHJ that gives a large V oc under 1-Sun is essential.…”

Section: Introductionmentioning

confidence: 99%

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Porphyrin-based thick-film bulk-heterojunction solar cells for indoor light harvesting

et al. 2018

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“…They can also be semitransparent, and therefore penetrate into niche markets such as photovoltaic windows [5,6]. Indeed, OPVs have already shown excellent potential especially for wearable technologies and indoor energy generation [7,8].…”

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confidence: 99%

The resurgence of organic photovoltaics

Ierides

Zampetti

Cacialli

2019

Current Opinion in Green and Sustainable Chemistry

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Several advances were reported in the field of organic photovoltaics in the last two years. Development and application of non-fullerene acceptors in particular has injected new life into the field. Exploitation of such materials in ternary blends and tandem solar cell structures has in fact enabled record high efficiencies >15%, thus paving the way towards commercialisation. Introduction:Organic semiconductors (OS) rapidly became a success story for light-emitting diodes and then displays, now found in a plethora of commercial applications with further current focus on extending their performance in the near infra-red [1,2]. On the other hand, organic photovoltaics (OPVs) have lagged behind due to their limited efficiencies. Recently, advances in OPV research led to the fabrication of record high 17.3% [3••] efficient solar cells, thus demonstrating a potentially bright future for OPVs as well. The key competitive advantage of OPVs is their solutionprocessability which can offer low-cost fabrication of flexible devices over large areas [4]. They can also be semitransparent, and therefore penetrate into niche markets such as photovoltaic windows [5,6]. Indeed, OPVs have already shown excellent potential especially for wearable technologies and indoor energy generation [7,8].

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Designing a ternary photovoltaic cell for indoor light harvesting with a power conversion efficiency exceeding 20%

Abstract: A PCDTBT:PC71BM solar cell adopted by a ternary strategy with PDTSTPD achieves an overall PCE of 20.8% under indoor illumination.

Cited by 126 publications

References 34 publications

All‐Day Operating Quaternary Blend Organic Photovoltaics

All‐Day Operating Quaternary Blend Organic Photovoltaics

Porphyrin-based thick-film bulk-heterojunction solar cells for indoor light harvesting

The resurgence of organic photovoltaics

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