Revealing the structural effects of non-fullerene acceptors on the performances of ternary organic photovoltaics under indoor light conditions

Singh, Ranbir; Duan, Tainan; Kan, Zhipeng; Chochos, Christos L.; Kini, Gururaj P.; Kumar, Manish; Park, Jong-Deok; Lee, Jaewon; Lee, Jae‐Joon

doi:10.1016/j.nanoen.2020.104934

Cited by 33 publications

(35 citation statements)

References 48 publications

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“…Moreover, Ranbir et al studied the effect of employing different NFAs as a crystalline modulator in ternary blend system to fabricate efficient IOPVs. [70] They introduced amorphous (PDI2 and PDI4) and semicrystalline (IDT and IDDT) type of NFAs as the third component into OD:PC 71 The addition of semicrystalline IDT among other NFAs enabled the formation of compact nanoscale morphology with welldispersion and smaller π-π stacking distance, thereby resulting in the efficient charge separation, the faster charge carrier transport, the reduced energetic disorder, and the suppression of non-geminate recombination. Yang et al adopted the ringfusion strategy to design and synthesis the new acceptor materials which can effectively tuned the optoelectronic and structural properties of conjugated materials.…”

Section: Indoor Organic Photovoltaic Materialsmentioning

confidence: 99%

“…In recent years, the development of high efficiency photo absorber materials and innovative fabrication techniques that are compatible with large scale, low cost manufacturing process, demands the attentions to be focus on operational stability of OPVs for commercialization. Numerous efforts have been devoted to understand the degradation mechanism of OPVs under standard simulated illumination (AM 1.5G, [2,8,14,15,17,19,[60][61][62][63][64][69][70][71][82][83][84] 100 mW cm À 2 ) condition or outdoor in direct sunlight, whereas there are few reported investigations into the degradation behavior of OPVs in indoor low light environments. [25,[105][106][107][108][109] However, relatively mild indoor conditions, compared to the severe outdoor or intense stability evaluation conditions such as heat, solar irradiation, and fluctuating weather, can provide a pathway for prolonged device operational stability.…”

Section: Device Stability Of Indoor Organic Photovoltaicsmentioning

confidence: 99%

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Indoor Organic Photovoltaics for Self‐Sustaining IoT Devices: Progress, Challenges and Practicalization

2021

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Indoor photovoltaics (IPVs) have great potential to provide a self-sustaining power source for Internet-of-Things (IoT) devices. The rapid growth in demand for low-power IoT devices for indoor application not only boosts the development of highperformance IPVs, but also promotes the electronics and semiconductor industry for the design and development of ultra-low-power IoT systems. In this Review, the recent progress in IPV technologies, design rules, market trends, and future prospects for highly efficient indoor photovoltaics are discussed. Special attention is given to the progress and development of organic photovoltaics (OPVs), which demonstrate great possibilities for IPVs, owing to their bandgap tunability, high absorbance coefficient, semitransparency, solution processabil-ity, and easy large-area manufacturing on flexible substrates. Highly efficient indoor organic photovoltaics (IOPVs) can be realized through designing efficient donor and acceptor absorber materials that have good spectral responses in the visible region and better energy-aligned interfacial layers, and through modulation of optical properties. Interfacial engineering, photovoltage losses, device stability, and large-area organic photovoltaic modules are surveyed to understand the mechanisms of efficient power conversion and challenges for IOPVs under indoor conditions as a self-sustaining power source for IoT devices. Finally, the prospects for further improve in IOPV device performance and practical aspects of integrating IOPVs in low-power IoT devices are discussed.

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Section: Indoor Organic Photovoltaic Materialsmentioning

confidence: 99%

Section: Device Stability Of Indoor Organic Photovoltaicsmentioning

confidence: 99%

Indoor Organic Photovoltaics for Self‐Sustaining IoT Devices: Progress, Challenges and Practicalization

2021

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“…[45] Besides, OD:PC 71 BM:IDT OSCs showed a PCE of 21.13 % under an indoor LED source of 1000 lx, outperforming other counterparts which were mainly ascribed to a favorable morphology. [46] Tan et al utilized the wide-bandgappoly[ (2,6-(4,8- -F):BTA3-based film, which plays an impressive role in reducing the E loss and suppressing the carrier recombination. As a result, the ternary devices exhibited a high PCE of 20 % and a high V oc of 1 V under indoor lighting.…”

Section: Ternary and Quaternary Devicesmentioning

confidence: 99%

An Overview of High‐Performance Indoor Organic Photovoltaics

Liu

Luo

et al. 2021

ChemSusChem

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In recent years, indoor organic photovoltaics (IOPVs) have attracted increasing attention because of their ability to power microelectronic devices and sensors, especially for the internet of things (IoT). In contrast with silicon‐based indoor PV, the IOPVs exhibit better performance due to their tunable bandgap via molecular design, which could achieve a better spectrum matched with the lighting sources. Based on the simulated power conversion efficiency (PCE) in theory, the maximum value can achieve over 50 % under the white LED illumination, which is much higher than the practical top PCE of 31 %, indicating there is room further to improve the performance of IOPVs by various optimization methods. Based on these benefits, the recent progress in IOPVs with different methods was summarizes, and light was shed on the remaining challenges for achieving practical applications in the future. In the end, some guidelines for the development of IOPVs were proposed.

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“…The OPV cells have experienced rapid development during the past few decades due to the multi-disciplinary efforts, including the design of new materials, the device physics, and the device engineering (Clarke and Durrant, 2010 ; Meng et al, 2018 ; Menke et al, 2018 ; Qian et al, 2018 ; Yan et al, 2018 ; Yuan et al, 2019 ; Cui et al, 2020b ), as a result, the record power conversion efficiency (PCE) of single-junction OPV cell has exceeded 18% (Liu et al, 2020a ; Wang, 2020 ; Zhang et al, 2021 ). Besides the outdoor applications, OPV cells under dim light or indoor light conditions also show great potential in the application of off-grid energy sources (Cui et al, 2019 ; Singh et al, 2020 ; Zhang et al, 2020 ). Indoor OPV (IOPV) cells can convert the energy emitted from the household lighting facilities or ambient dim-light sources into the energy at the scale of megawatt to microwatt, showing great potential in supplying the power to wireless electronics such as smart housing sensors and sensors for the “Internet of Things.”…”

Section: Introductionmentioning

confidence: 99%

Suppressing Energetic Disorder Enables Efficient Indoor Organic Photovoltaic Cells With a PTV Derivative

Ren

Zhang

et al. 2021

Front. Chem.

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Indoor organic photovoltaics (IOPVs) cells have attracted considerable attention in the past few years. Herein, two PTV-derivatives, PTVT-V and PTVT-T, were used as donor materials to fabricate IOPV cells with ITCC as the acceptor. The preferred orientation of the crystals changed from edge-on to face-on after replacing the ethylene in the backbones of PTVT-V by the thiophene in that of PTVT-T. Besides, it was found that, the energetic disorder of the PTVT-T:ITCC based system is 58 meV, which is much lower than that of PTVT-V:ITCC-based system (70 meV). The lower energetic disorder in PTVT-T:ITCC leads to an efficient charge transfer, charge transport, and thus the weak charge recombination. As a result, a PCE of 9.60% under AM 1.5 G and a PCE of 24.27% under 1,000 lux (LED 2,700 K) with a low non-radiative energy loss of 0.210 eV were obtained based on PTVT-T:ITCC blend. The results indicate that to improve the PTV-derivatives photovoltaic properties by suppressing the energetic disorder is a promising way to realize low-cost IOPV cells.

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Revealing the structural effects of non-fullerene acceptors on the performances of ternary organic photovoltaics under indoor light conditions

Cited by 33 publications

References 48 publications

Indoor Organic Photovoltaics for Self‐Sustaining IoT Devices: Progress, Challenges and Practicalization

Indoor Organic Photovoltaics for Self‐Sustaining IoT Devices: Progress, Challenges and Practicalization

An Overview of High‐Performance Indoor Organic Photovoltaics

Suppressing Energetic Disorder Enables Efficient Indoor Organic Photovoltaic Cells With a PTV Derivative

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