Achieving over 10 % Efficiency in Poly(3‐hexylthiophene)‐Based Organic Solar Cells via Solid Additives

Yang, Chenyi; Yu, Runnan; Liu, Chenyu; Li, Hao; Zhang, Shaoqing; Hou, Jianhui

doi:10.1002/cssc.202100627

Cited by 49 publications

(36 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, it has been demonstrated that the PCE of the P3HT based OSCs could be significantly increased using ZY-4Cl, with the chemical structure very similar to that of Y6 (Fig. S1, Supporting Information), as the acceptor material (PCE ≈ 10.24%) 55 . This is one of the highest PCE values realized for the OSCs based on P3HT 22,23,26,33 .…”

Section: Reducing Knr In the P3ht:nfa Oscsmentioning

confidence: 99%

Quantum Efficiency and Voltage Losses in P3HT: Non-fullerene Solar Cells

Xu¹,

Wu²,

Liang³

et al. 2022

Acta Physico Chimica Sinica

View full text Add to dashboard Cite

From the industrial perspective, poly(3-hexylthiophene) (P3HT) is one of the most attractive donor materials in organic photovoltaics. The large bandgap in P3HT makes it particularly promising for efficient indoor light harvesting, a unique advantage of organic photovoltaic (PV) devices, and this has started to gain considerable attention in the field of PV technology. In addition, the up-scalability and long material stability associated with the simple chemical structure make P3HT one of the most promising materials for the mass production of organic solar cells. However, the solar cells based on P3HT has a low power conversion efficiency (PCE), which is less than 11%, mainly due to significant voltage losses. In this study, we identified the origin of the high quantum efficiency and voltage losses in the P3HT:non-fullerene based solar cells, and we proposed a strategy to reduce the losses. More specifically, we observed that: 1) the non-radiative decay rate of the charge transfer (CT) states formed at the donor-acceptor interfaces was much higher for the P3HT:nonfullerene solar cells than that for the P3HT:fullerene solar cells, which was the main reason for the more severely limited photovoltage; 2) the origin of the high non-radiative decay rate in the P3HT:non-fullerene solar cell could be ascribed to the short packing distance between the P3HT and non-fullerene acceptor molecules at the donor-acceptor interfaces (DA distance), which is a rarely studied interfacial structural property, highly important in determining the decay rate of CT states; 3) the lower voltage loss in the state-of-the-art P3HT solar cell based on the 2,2'- ((12,13-bis(2-butyldecyl)-3,9diundecyl-12,13-dihydro-[1,2,5]-thiadiazolo[3,4-e]thieno[2'',3'':4',5']thieno[2',3':4,5]p-yrolo[3,2-g]thieno [2',3':4,5]thieno [3,2b]indole-2,10-diyl)bis(methanelylidene))bis(5,6-dichloro-1H-indene-1,3(2H)-dion-e) (ZY-4Cl) acceptor could be associated with the better alignment of the energy levels of the active materials and the longer DA distance, compared to those based on the commonly used acceptors. However, the DA distance was still very short, limiting the device voltage. Thus, improving the performance of the P3HT based solar cells requires a further increase in the DA distance. Our findings are expected to pave the way for breaking the performance bottleneck of the P3HT based solar cells.

show abstract

Section: Reducing Knr In the P3ht:nfa Oscsmentioning

confidence: 99%

Quantum Efficiency and Voltage Losses in P3HT: Non-fullerene Solar Cells

Xu¹,

Wu²,

Liang³

et al. 2022

Acta Physico Chimica Sinica

View full text Add to dashboard Cite

show abstract

“…23 Later, they further pushed the PCE to 10.24% by preparing ternary devices with a third solid additive. 24 What's more, alternatives were designed, such as the P3HT derivative P4T2F-FD with electron-withdrawing fluorine atoms attached to the skeleton, which result in a lower HOMO. This donor yielded the highest PCE of 13.34% when combined with the Y6-BO acceptor in nonhalogenated solvent.…”

Section: The Development Of New Donor and Acceptor Materials In The Oscsmentioning

confidence: 99%

Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[80] After precise control of the molar mass, the PCE was further improved to 9.60% when using P3HT with medium molar mass batch (25.5 kg/mol). Very recently, we continued to optimize the molecular packing and phase separation of P3HT:ZY-4Cl-based blend film by applying a volatilizable [81] In comparison with the widely used additive 1,8-diiodooctane, SA4 exhibited similar effects on the optical and crystalline characteristics of P3HT and ZY-4Cl but totally different on the morphology of their blend film. In-depth investigation revealed that SA4 could induce the enhanced molecular packing and superior phase separation in the blend film, which were conducive to the enhanced J SC and FF.…”

Section: Oscs Based On P3htmentioning

confidence: 99%

Low‐cost and efficient organic solar cells based on polythiophene‐ and poly(thiophene vinylene)‐related donors

2021

Self Cite

View full text Add to dashboard Cite

At present, most of state-of-the-art power conversion efficiencies (PCEs) of organic solar cells (OSCs) are achieved from the photoactive materials involving donoracceptor (D-A) copolymer donors. It is well known that the complicated molecular structure of D-A copolymers means the tedious synthesis, which brings about severe cost issue and poor scalability for the industrial production. Therefore, to develop application-oriented OSCs, considerable attention should be paid on simplifying the chemical structures of polymer donors. Polythiophene (PT) and poly(thiophene vinylene) (PTV) derivatives should be among the simplest polymer donors, and OSCs based on them have made some breakthroughs in past 2 years. Here, we briefly introduce the recent advances of OSCs based on low-cost polymers including poly(3-hexylthiophene) (P3HT), PT derivatives, and PTV derivatives, respectively, and emphasize the importance of modulating energy levels, preaggregation effect, and D/A miscibility for the past progress as well as the future development. At last, we also propose some challenges demanding prompt solution for realizing practical application of OSCs, aiming at providing guidance and stimulating new ideas for further research.

show abstract

Achieving over 10 % Efficiency in Poly(3‐hexylthiophene)‐Based Organic Solar Cells via Solid Additives

Cited by 49 publications

References 41 publications

Quantum Efficiency and Voltage Losses in P3HT: Non-fullerene Solar Cells

Quantum Efficiency and Voltage Losses in P3HT: Non-fullerene Solar Cells

Recent progress in organic solar cells based on non-fullerene acceptors: materials to devices

Low‐cost and efficient organic solar cells based on polythiophene‐ and poly(thiophene vinylene)‐related donors

Contact Info

Product

Resources

About