An Indacenodithieno[3,2‐b]thiophene‐Based Organic Dye for Solid‐State p‐Type Dye‐Sensitized Solar Cells

Abstract

An indacenodithieno[3,2-b]thiophene( IDTT) unit is used as a linker moiety to design an ew p-type dye-TIP-for solid-state p-type dye-sensitized solar cells. Solarc ells based on the TIP dye offered an efficiency of 0.18 %w ith an open-circuit photovoltage of 550 mV and as hort-circuit photocurrent density of 0.86 mA cm À2 ,w hich is better than those of two reference dyes, PB6 and BH4. Charge lifetimeexperiments reveal that the IDTT linker-based TIP dye significantly suppresses charge recombination losses in the devices.[a] Dr.Supporting Information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Dye-sensitized solar cells strike back

“…Tian et al followed up their work with organic electron transport mediators by completely removing the electrolyte/organic charge transport component and directly depositing TiO 2 or ZnO on the NiO, so that the dye injects electrons directly into the n-type semiconductor and holes directly into the p-type semiconductor. [702][703][704]713 This concept was first introduced by Bandara et al but incomplete pore filling by the n-type semiconductor limited the cell performance. 591,714 Tian et al had optimised the interface between the dye and the semiconductors by engineering the structure of the dye and the deposition of the n-type semiconductor.…”

“…Solar cells based on the TIP dye, containing an indacenodithieno[3,2- b ]thiophene linker, gave PCE = 0.18%, J SC = 0.86 mA cm −2 , V OC = 535 mV, FF = 40% and max IPCE of 5%. 702 …”

Mechanistic Insights into Solid-State p-Type Dye-Sensitized Solar Cells

“…Nevertheless, the performance of this solar cell is unsatisfying . Although the energy conversion efficiency was later improved to 0.18% using a solution-processed fabrication method and a new dye, , there is a huge performance discrepancy compared with the classic n-type DSCs. The improvement of the performance of p-ssDSCs is currently limited by the shortage of deeper knowledge about the main parameters that significantly influence their photovoltaic behavior.…”

“…With the development of dye-sensitized solar cells (DSCs), − the concept of solid-state p-type DSCs (p-ssDSCs) has been ignited, and a series of working devices has been successfully fabricated recently. − The p-ssDSCs can be treated as one of the subcategories of the DSCs’ solar cell system. They, in contrast to n-ssDSCs, are based on a dye-sensitized p-type semiconductor (p-SC) using NiO.…”

Towards sustainable and efficient p-type metal oxide semiconductor materials in dye-sensitised photocathodes for solar energy conversion

“…While this perspective focuses on the semiconductor materials, it should be noted that there are multiple ways to improve the efficiency, and focusing on the individual components as well as their interaction is significant to move forward. Advances in the dyes, [21][22][23][24][25][26] electrolytes 19,21,[27][28][29] or in general 17,21 can be found in the literature.…”