Porphyrins for efficient dye-sensitized solar cells covering the near-IR region

Wu, Chia‐Hua; Chen, Ming-Che; Su, Pin-Chang; Kuo, Hshin-Hui; Wang, Chin‐Li; Lu, Chun‐Yang; Tsai, Chih‐Hung; Wu, Chung‐Chih; Lin, Che

doi:10.1039/c3ta14208f

Cited by 72 publications

(35 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[14,15] Additionally, higher conversion efficiency could be achieved by harnessing the sunlight at longer wavelengths or near-IR region. [16,17] Often, by appending donor group (s) on porphyrin framework or extending the π-conjugation such results could be accomplished. [18][19][20][21] Many donor substituents such as phenothiazine, diarylamino, anthracene, carbazole, fluorene, have been appended on porphyrin structures for improving their DSSC efficiency.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors

et al. 2019

View full text Add to dashboard Cite

Three new 'push-pull' A 3 B Zn(II)porphyrin dyes having mesopyrenyl, carbazolyl and phenothiazine as electron donors (A) and phenylcarboxylic acid as acceptor/anchor (B) were synthesized and utilized for DSSC application. The spectral and electrochemical redox properties of these new dyes were studied and compared with trans-A 2 BC Zn(II) porphyrin dyes under similar experimental conditions. Red-shifted, broadened absorption peaks, lower fluorescence quantum yields, and shortened lifetimes were observed for the A 3 B dyes as compared to zinc tetraphenylporphyrin control, ZnTPP. DFT optimized structures suggested effective charge separation related to enhanced charge injection efficiency. Driving force for electron injection (ΔG inj ) and dye regeneration (ΔG reg ) calculated from the spectral and electrochemical studies predicted facile electron injection from excited dye into semiconductor TiO 2 in the constructed solar cells. Phenothiazine appended dye (KP-TriPTZ-Zn) showed the highest η value of 7.3 % for PCE with greater J sc and V oc values due to its better light harvesting ability and reduced dye aggregation as compared to other dyes. Our studies demonstrate that the dyes having multiple electron-donating groups exhibit higher photon-to-current conversion efficiency.[a] Dr.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors

et al. 2019

View full text Add to dashboard Cite

show abstract

“…In recent years, a number of highly efficient porphyrins with PCE of over 10% have been developed. [43][44][45][46] The best performing porphyrin dyes have achieved a PCE higher than 12%…”

Section: Introductionmentioning

confidence: 99%

Porphyrin Sensitizers Bearing a Pyridine-Type Anchoring Group for Dye-Sensitized Solar Cells

Mai

Moehl

Hsieh

et al. 2015

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Three novel efficient donor-acceptor porphyrins, MH1-MH3, with a pyridine-type acceptor and anchoring group were synthesized and their optical, electrochemical, and photovoltaic properties investigated. Replacing the commonly used 4-carboxyphenyl anchoring group with 2-carboxypyridine, 2-pyridone, and pyridine did not significantly change the absorption and electrochemical properties of the porphyrin dyes. These new porphyrin dyes MH show power conversion efficiencies of 8.3%, 8.5%, and 8.2%, which are comparable to that of the benchmark YD2-o-C8 (η=8.25%) under similar conditions. It was demonstrated that 2-carboxypyridine is an efficient and stable anchoring group as MH1 and showed better cell performance and long-term stability than YD2-o-C8 under light soaking conditions.

show abstract

“…This is evidenced by the higher absorptivities shown in the UV/ Vis spectra. [28] The much lowered IPCE value as well as the J SC of 9.42 mA cm À2 for TFRS-41 could be due to an orientational effect of the peripheral alkoxy substituents. For further comparison, these three sensitizers were subjected to DSC fabrication by using the traditional I À /I 3 À electrolyte under identical cell parameters.…”

Section: Device Performancesmentioning

confidence: 99%

“…Similar tactics of introducing 2,6-dialkoxyphenyl substituents have also been employed to improve the performance of organic dithienopyrrole-based sensitizers [27] and zinc-porphyrin sensitizers. [28] The much lowered IPCE value as well as the J SC of 9.42 mA cm À2 for TFRS-41 could be due to an orientational effect of the peripheral alkoxy substituents. Figure 4 b shows the transient photocurrent as a function of incident light intensity for the relevant devices.…”

Section: Device Performancesmentioning

confidence: 99%

Thiocyanate‐Free Ruthenium(II) Sensitizers for Dye‐Sensitized Solar Cells Based on the Cobalt Redox Couple

Wu¹,

Clifford²,

Wang³

et al. 2014

ChemSusChem

View full text Add to dashboard Cite

Two thiocyanate-free ruthenium(II) sensitizers, TFRS-41 and TFRS-42, with distinctive dialkoxyphenyl thienyl substituents were successfully prepared and tested for potential applications in making dye-sensitized solar cells (DSCs). Subsequent device fabrication was conducted by using a [Co(bpy)3 ](2+/3+) -based (bpy=2,2'-bipyridine) electrolyte, for which the best performance data, namely, JSC =13.11 mA cm(-2) , VOC =862 mV, fill factor=0.771, and η=8.71%, were recorded for the sensitizer TFRS-42 with a 2,6-dialkoxyphenyl substituent under AM 1.5G irradiation. The markedly higher Voc value was confirmed by the longer electron lifetime revealed in transient photovoltage (TPV) measurements versus the TFRS-1 sensitizer. In addition, DFT calculation and detailed first-principles computational analysis were conducted to provide a rationale for the observed trends in their photovoltaic performances and electron lifetimes, with reference to different performances exhibited by three thiocyanate-free sensitizers, TFRS-1, TFRS-41 and TFRS-42, versus Z907 reference. Through the proper control of peripheral substituents, the thiocyanate-free ruthenium(II)-based DSC sensitizers can positively influence the performances of DSCs, with better light-harvesting capability and suppressed charge recombination, for DSC cells fabricated by using a [Co(bpy)3 ](2+/3+) -based electrolyte.

show abstract

Porphyrins for efficient dye-sensitized solar cells covering the near-IR region

Cited by 72 publications

References 55 publications

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors

Porphyrin Sensitizers Bearing a Pyridine-Type Anchoring Group for Dye-Sensitized Solar Cells

Thiocyanate‐Free Ruthenium(II) Sensitizers for Dye‐Sensitized Solar Cells Based on the Cobalt Redox Couple

Contact Info

Product

Resources

About

Porphyrins for efficient dye-sensitized solar cells covering the near-IR region

Cited by 72 publications

References 55 publications

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A3B Porphyrinic Dyes having Peripheral Donors

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A3B Porphyrinic Dyes having Peripheral Donors

Porphyrin Sensitizers Bearing a Pyridine-Type Anchoring Group for Dye-Sensitized Solar Cells

Thiocyanate‐Free Ruthenium(II) Sensitizers for Dye‐Sensitized Solar Cells Based on the Cobalt Redox Couple

Contact Info

Product

Resources

About

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors

Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A₃B Porphyrinic Dyes having Peripheral Donors