Effect of structural optimization on the photovoltaic performance of dithieno[3,2-b:2′,3′-d]pyrrole-based dye-sensitized solar cells

Abstract

Five novel organic push–pull dyes, DT, CD-T, TD-T, CD-C and TD-P, based on carbazole or triphenylamine as donors, dithieno[3,2-b:2′,3′-d]pyrrole as a π-spacer and cyanoacetic acid as an acceptor were synthesized, and their structures were optimized for DSSCs.

Influence of triphenylamine derivatives in efficient dye-sensitized/organic solar cells

“…After optimization devices fabricated from CD-T afforded a PCE of 6.63% for PCE, V oc = 710 mV, J sc = 14.55 mV cm −2 and a FF of 0.64. 144…”

“…Aer optimization devices fabricated from CD-T afforded a PCE of 6.63% for PCE, V oc = 710 mV, J sc = 14.55 mV cm −2 and a FF of 0.64. 144 In 2017, Delcamp and co-workers prepared four NIR photosensitizers comprising a low-recombination triarylamine donor and an ethylhexyl ester substituted thieno[3,4-b]thiophene (3,4-TT) p-bridge for application in DSSCs. Extension of the conjugation of the dye and a red-shi of the absorption spectra were achieved via the introduction of thiophene or insertion of a furan p-spacer in PB14 and PB15, respectively.…”

Recent developments in metal‐free organic sensitizers derived from carbazole, triphenylamine, and phenothiazine for dye‐sensitized solar cells

“…Five novel dyes, 31‐35 based on CA as an acceptor, dithieno[3,2‐b:2′,3′‐d]pyrrole (DTP) π‐bridge and CZ or TPA donors were synthesized by Zhang et al 78 They concentrated on various effects of spatial frameworks and connection positions within the DSSCs. The results show that the narrower the dihedral angle in the dye molecule between the donor group and the bridging arm is, the stronger the molecule's MEC and greater the potential to absorb light.…”

Hubungan Sifat Optik terhadap Performa Kinerja Sel Surya DSSC Transparan Berbahan Dye DN-F01 sebagai Sensitizer

“…Penyerapan pada panjang gelombang sinar tampak terjadi karena transisi transfer muatan intra-molekul dalam dye, dan dasar untuk transisi ini adalah adanya efek dorong-tarik molekul elektronik. Donor elektron dan akseptor dalam D-π-A dye bertindak sebagai sistem elektron dorong-tarik; semakin kuat efek dorong-tarik elektron, semakin jelas efek transfer muatan intra-molekul dan semakin banyak pita serapan pada daerah panjang gelombang yang lebih besar [21] . Hal ini memungkinkan semakin banyak foton yang dapat diserap oleh dye untuk dikonversi menjadi energi listrik.…”

“…Semakin besar daya serapan, semakin kecil celah pita energi yang akan mempermudah proses generated electron pada tingkat energi ground state ke tingkat energi excited state sehingga akan mempermudah transfer elektron ke material lain pada struktur sel surya DSSC. didanai oleh Hibah Penelitian Unggulan Perguruan Tinggi 2020 pada PNPB UNS (HGR-UNS), nomor kontrak 452/UN27 21…”