Hammer throw-liked hybrid cyclic and alkyl chains: A new side chain engineering for over 18 % efficiency organic solar cells

Wang, Xunchang; Xiao, Cong; Sun, Xiaokang; Saparbaev, Aziz; Lei, Shiyun; Zhang, Mingrui; Zhong, Tian; Li, Zhiya; Zhang, Jiayi; Zhang, Manxue; Yu, Yun; Xiao, Biao; Yang, Chunming; Yang, Renqiang

doi:10.1016/j.nanoen.2022.107538

Cited by 34 publications

(24 citation statements)

References 52 publications

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“…From previous work, the ultrafast τ 1 is commonly assigned to the exciton dissociation time at the D/A interfaces, while relatively tardy τ 2 is attributed to the exciton diffusion time toward interface before dissociation. [ 53–56 ] Therefore, the results show the incorporation of TPTI in the copolymer that can help to accelerate exciton transfer rate, which is benefiting to charge generation in the corresponding Tol‐processed device, and, thus, slightly higher J sc is obtained in DEH‐X‐based devices.…”

Section: Resultsmentioning

confidence: 94%

High‐Efficiency Semi‐Transparent Organic Solar Cells Using Pentacyclic Aromatic Lactam‐Containing Terpolymer Strategy for Eco‐Friendly Greenhouse Application

et al. 2022

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Semitransparent organic solar cells (ST‐OSCs) offer unique features such as spectral tunability and see‐through function, giving them great potential in photovoltaic (PV) agriculture. However, the combination of sufficient average visible transmittance (AVT) and high power conversion efficiency (PCE) with eco‐friendly device fabrication has always been a key issue. Herein, a simple but effective strategy by incorporating pentacyclic aromatic lactam acceptor unit (TPTI) in copolymer donors for toluene processed high‐efficiency ST‐OSCs is performed. The comparisons between D18‐ and DEH‐X‐based ST‐OSCs demonstrate the effect of TPTI inserting on the polymer main skeleton can not only lower the energy level, improve the processability in nonhalogen solvent, tune the ideal morphology for efficient charge dissociation, but also control a photon transport window suitable for plant absorption. Therefore, the resulting OSCs processed with toluene exhibit a PCE of 14.6% with an AVT of 22%, which represents one of the highest values for ST‐OSCs made from nonhalogenated solvents. What's more, it is found that plant growth under ST‐OSCs filtered light is comparable with that under natural light. Herein, a guide for developing high‐performance ST‐OSCs is provided and the prospect of ST‐OSCs for green manufacturing PV greenhouse application is demonstrated.

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Section: Resultsmentioning

confidence: 94%

High‐Efficiency Semi‐Transparent Organic Solar Cells Using Pentacyclic Aromatic Lactam‐Containing Terpolymer Strategy for Eco‐Friendly Greenhouse Application

et al. 2022

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“…Recently, binary OSCs based on a wide band gap polymer donor and a narrow band gap nonfullerene acceptor (NFA) have demonstrated great success, which is mainly attributed to the rapid development of fused-ring electron acceptors (such as Y-series NFAs) with excellent optoelectronic property. − However, there are still some significant challenges for further enhancement in OSC performance, including light-capturing, energy loss ( E loss ), morphology optimization, etc. Until now, great efforts have been devoted to resolving the critical problems mentioned above. − Among a series of strategies, ternary OSC (introducing the third component into a binary host system) has been proven to be a prominent way not only to broaden the light absorption range or enhance the light absorption capability but also to decrease the E loss and modulate phase separation morphology, which contributes to the improvement of photovoltaic parameters, thus leading to superior efficiency compared to that of the binary counterpart. − Presently, the ternary blend films mainly consist of one donor and two acceptors (D:A 1 :A 2 ) or two donors and one acceptor (D 1 :D 2 :A). − With the emergence of various NFA materials, D:A 1 :A 2 -type TOSCs have been studied extensively and achieved outstanding device performance. For instance, Zhu et al reported a Y6 analogue, AQx-3, which was introduced into the PM6:Y6 system as the guest component .…”

Section: Introductionmentioning

confidence: 99%

Selenophene-Containing Small-Molecule Donor with a Medium Band Gap Enables High-Efficiency Ternary Organic Solar Cells

Liu

Qiu

et al. 2023

ACS Appl. Mater. Interfaces

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To construct efficient donor:donor:acceptor (D 1 :D 2 :A)-type ternary devices, two new selenophene-containing small-molecule (SM) donors named FSBTSeEHR and FSBTSeHR have been designed and synthesized that show broader and red-shifted absorption spectra than the thiophene analogues. With the introduction of SM donors into the D18:CH-6F host system, enhanced light harvesting and charge transport were achieved, benefiting from more complementary absorptions and cascaded energy levels. Furthermore, the doping of the SM donor could effectively modulate the micromorphology and enable a more suitable phase separation size in the active layer. After systematic optimization, the FSBTSeEHR-based ternary organic solar cell (TOSC) exhibited an excellent power conversion efficiency (PCE) of 18.02% with a high open-circuit voltage (V oc ) of 0.905 V, short-circuit current density (J sc ) of 26.41 mA cm −2 , and fill factor (FF) of 0.754. By contrast, the FSBTSeHR counterpart showed a superior efficiency of 18.55% due to the higher J sc (26.91 mA cm −2 ) and FF (0.761). The outstanding PCEs of D 1 :D 2 :A-type TOSCs based on our SM donors, FSBTSeEHR and FSBTSeHR, are significantly higher than those of the corresponding binary host system (16.86%) and among the highest values reported to date. This work demonstrates that D 1 :D 2 :Atype TOSCs have tremendous potential to achieve superior performances through elaborate design of the SM donor guest and reasonable combination of D and A ingredients.

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“…Polyethylene terephthalate (PET), which has the characteristics of light weight and bending resistance, is a widely used ideal flexible substrate in organic electronic devices, including organic field-effect transistors [ 3 , 4 , 5 ], organic light emitting diodes [ 6 , 7 ], and FOPVs [ 8 , 9 ]. The research on FOPV primarily focuses on developing new polymeric functional materials [ 10 , 11 ], electrodes [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ], and substrates [ 19 , 20 , 21 , 22 ]. In addition, fabrication technology is also one of the most widely researched areas to obtain an FOPV [ 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Performance of Flexible Organic Photovoltaics Based on MoS2 Micro-Nano Array

Peng

Ling

et al. 2023

Molecules

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In this work, we investigated the influence of MoS2 functioning as an electron transport layer (ETL) on the inverted flexible organic photovoltaics (FOPVs). Three ETLs, including MoS2, lithium quinolate (Liq), and a MoS2/Liq bilayer, were evaporated onto ITO-integrated polyethylene terephthalate substrates (PET-ITO), and the properties of transmittance, water contact angle, and reflectivity of the films were analyzed. The results revealed that MoS2 was helpful to improve the lipophilicity of the surface of the ETL, which was conducive to the deposition of the active layer. In addition, the reflectivity of MoS2 to the light ranging from 400 to 600 nm was the largest among the pristine PET-ITO substrate and the PET-ITO coated with three ETLs, which promoted the efficient use of the light. The efficiency of the FOPV with MoS2/Liq ETL was 73% higher than that of the pristine device. This was attributed to the nearly two-fold amplification of the MoS2 array to the light field, which promoted the FOPV to absorb more light. Moreover, the efficiency of the FOPV with MoS2 was maintained under different illumination angles and bending angles. The results demonstrate the promising applications of MoS2 in the fabrication of FOPVs.

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Hammer throw-liked hybrid cyclic and alkyl chains: A new side chain engineering for over 18 % efficiency organic solar cells

Cited by 34 publications

References 52 publications

High‐Efficiency Semi‐Transparent Organic Solar Cells Using Pentacyclic Aromatic Lactam‐Containing Terpolymer Strategy for Eco‐Friendly Greenhouse Application

High‐Efficiency Semi‐Transparent Organic Solar Cells Using Pentacyclic Aromatic Lactam‐Containing Terpolymer Strategy for Eco‐Friendly Greenhouse Application

Selenophene-Containing Small-Molecule Donor with a Medium Band Gap Enables High-Efficiency Ternary Organic Solar Cells

Enhanced Performance of Flexible Organic Photovoltaics Based on MoS2 Micro-Nano Array

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