Indoor Organic Photovoltaics: Highly Efficient Indoor Organic Photovoltaics with Spectrally Matched Fluorinated Phenylene‐Alkoxybenzothiadiazole‐Based Wide Bandgap Polymers (Adv. Funct. Mater. 27/2019)

You, Young‐Jun; Song, Chang Eun; Hoang, Quoc Viet; Kang, Yoonmook; Goo, Ji Soo; Ko, Doo‐Hyun; Lee, Jae‐Joon; Shin, Won Suk; Shim, Jae Won

doi:10.1002/adfm.201970183

Cited by 36 publications

(31 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, the bromination of compound 3 using N ‐bromosuccinimide (NBS) in chloroform (CF) and trifluoroacetic acid (1:1) gave monomer M1 with a yield of over 70%. Monomers M2–M4 were synthesized according to a previous report; [ 45 ] detailed synthesis procedures for M1 and P1–P3 can be found in the Supporting Information. Generally, polymers with F substituents exhibit lower solubility than those without; therefore, larger alkyl chains were introduced to M1 to guarantee the sufficient solubility of the final polymers for solution processing.…”

Section: Resultsmentioning

confidence: 99%

“…Among the various emerging weak electron‐deficient units, phenylene moieties with high aromatic resonance energy are considered an excellent choice for lowering HOMOs and, thus, increasing V OC . [ 44,45 ] Importantly, there are four vacant positions in the phenylene core which are readily available for structural modification. This offers an excellent opportunity to optimize the optoelectronic properties and aggregation behavior of the resulting materials.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, there are various successful examples of donor–acceptor polymers with fluorinated phenylene moieties that were previously reported for organic photovoltaic applications, which illustrates their potential for the development of efficient photoabsorbent materials. [ 41,44,45,48,56 ]…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Understanding the Critical Role of Sequential Fluorination of Phenylene Units on the Properties of Dicarboxylate Bithiophene‐Based Wide‐Bandgap Polymer Donors for Non‐Fullerene Organic Solar Cells

Kini

Lee

Jeon

et al. 2021

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Design and development of wide bandgap (WBG) polymer donors with low‐lying highest occupied molecular orbitals (HOMOs) are increasingly gaining attention in non‐fullerene organic photovoltaics since such donors can synergistically enhance power conversion efficiency (PCE) by simultaneously minimizing photon energy loss (Eloss) and enhancing the spectral response. In this contribution, three new WBG polymer donors, P1, P2, and P3, are prepared by adding phenylene cores with a different number of fluorine (F) substituents (n = 0, 2, and 4, respectively) to dicarboxylate bithiophene‐based acceptor units. As predicted, fluorination effectively aides in the lowering of HOMO energy levels, tailoring of the coplanarity and molecular ordering in the polymers. Thus, fluorinated P2 and P3 polymers show higher coplanarity and more intense interchain aggregation than P1, leading to higher charge carrier mobilities and superior phase‐separated morphology in the optimized blend films with IT‐4F. As a result, both P2:IT‐4F and P3:IT‐4F realize the best PCEs of 6.89% and 7.03% (vs 0.16% for P1:IT‐4F) with lower Eloss values of 0.65 and 0.55 eV, respectively. These results signify the importance of using phenylene units with sequential fluorination in polymer backbone for modifying the optoelectronic properties and realizing low Eloss values by synergistically lowering the HOMO energy levels.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understanding the Critical Role of Sequential Fluorination of Phenylene Units on the Properties of Dicarboxylate Bithiophene‐Based Wide‐Bandgap Polymer Donors for Non‐Fullerene Organic Solar Cells

Kini

Lee

Jeon

et al. 2021

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5] Based on these advantages, OSCs have achieved significant advances recently. [6][7][8][9] At present, the energy conversion efficiency (PCEs) of the single-junction fullerene polymer solar cells based on conjugated polymers as the donor has exceeded 16%. [10][11][12][13][14][15] The photo voltaic properties of OSCs based on donors containing porphyrin rings and their derivatives are impressive, [16] and they have been used in dye-sensitized solar cells for a long time.…”

Section: Introductionmentioning

confidence: 99%

“…Organic solar cells (OSCs) consisting of various building blocks are attracting considerable attention because of their light‐weight, high flexibility, and easy processing as well as the potential to tune the optical, mechanical, and electrical properties . Based on these advantages, OSCs have achieved significant advances recently . At present, the energy conversion efficiency (PCEs) of the single‐junction fullerene polymer solar cells based on conjugated polymers as the donor has exceeded 16% .…”

Section: Introductionmentioning

confidence: 99%

Efficient Polymer Solar Cells Based on New Random Copolymers with Porphyrin‐Incorporated Side Chains

Liu

Huang

Chen

et al. 2019

Macro Chemistry & Physics

View full text Add to dashboard Cite

Two new wide bandgap block copolymers (PL1 and PL2) with porphyrin‐incorporated side chains are designed and used as electron donors for solution‐processed bulk heterojunction polymer solar cells. The photophysical, electrochemical, and photovoltaic properties, charge transport mobility and film morphology of these two block copolymers are investigated. Detailed investigations reveal that the different alkyl groups and electron‐withdrawing substituents on the porphyrin pendant units have significant influence on the polymer solubility, absorption energy level, band gap, and charge separation in the bulk‐heterojunction thin films, and thus the overall photovoltaic performances. Organic photovoltaic devices derived from these copolymers and ([6,6]‐phenyl‐C71‐butyric acid methyl ester) (PC71BM) acceptor show the best power conversion efficiencies of 5.83% and 7.14%, respectively. These results show that the inclusion of a certain proportion of side chain porphyrin group as a pendant in the traditional donor‐acceptor (D‐A) type polymer can broaden the molecular absorption range and become a full‐color absorbing molecule. The size of the porphyrin pendant also has an obvious effect on the properties of the molecule.

show abstract

Elastomeric Indoor Organic Photovoltaics with Superb Photothermal Endurance

Kim

Lee

Saeed

et al. 2022

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Despite recent improvements in their power-conversion efficiency (PCE), organic photovoltaics (OPVs) cannot yet be guaranteed stable in an indoor environment. In this study, the destabilizing effects of morphological evolution and molecular-ordering variation on photoactive layers containing two to four photoactive components are investigated under realistic indoor photothermal (>55 °C for 1000 h) and mechanical (10% strain and 1000 cycles) deformation conditions. Layers with more stable morphologies are obtained by increasing the number of photoactive components; consequently, the quaternary OPVs show the best PCE retention (over 90% and 82% of the initial values after the photothermal and mechanical stresses, respectively). The increase in entropy caused by the additional components in the quaternary blend leads to a more balanced molecular arrangement and excellent photothermal stability. Stronger intermolecular bonding and less variation of molecular ordering likewise occur in the quaternary OPVs, enhancing their mechanical endurance.

show abstract

Indoor Organic Photovoltaics: Highly Efficient Indoor Organic Photovoltaics with Spectrally Matched Fluorinated Phenylene‐Alkoxybenzothiadiazole‐Based Wide Bandgap Polymers (Adv. Funct. Mater. 27/2019)

Cited by 36 publications

References 0 publications

Understanding the Critical Role of Sequential Fluorination of Phenylene Units on the Properties of Dicarboxylate Bithiophene‐Based Wide‐Bandgap Polymer Donors for Non‐Fullerene Organic Solar Cells

Understanding the Critical Role of Sequential Fluorination of Phenylene Units on the Properties of Dicarboxylate Bithiophene‐Based Wide‐Bandgap Polymer Donors for Non‐Fullerene Organic Solar Cells

Efficient Polymer Solar Cells Based on New Random Copolymers with Porphyrin‐Incorporated Side Chains

Elastomeric Indoor Organic Photovoltaics with Superb Photothermal Endurance

Contact Info

Product

Resources

About