An interdisciplinary experience on the development of Dye‐Cell technology

Abstract

Abstract. Under a special program supported by the University of São Paulo (USP) for the development of strategic fields of research, interdisciplinar discussion on the development of photovoltaics and energy technology has been established. Several aspects concerned to solar energy and PV technology were discussed in regular meetings along a year by professionals of different domains. As a result of the program, a collaborative work on the deposition of TiO 2 films employed in photoelectrochemical solar cells has been established between the Laboratory of Inorganic Photochemistry and Energy Conversion at the IQ-USP and other research groups.Preparation of TiO 2 emulsions from distinct methods were performed and compared. Spin-coating and painting techniques have been employed for the deposition of TiO 2 films over TCO substrates. Both techniques resulted in transparent homogeneous TiO 2 films which were successfully used as dye-sensitized photoanodes in solar cells. The results show that thin-film properties, such as thickness and transparency, can be controlled through the deposition technique and that photoelectrochemical measurements carried out by our group have been performed under appropriate film deposition conditions. This experience shows also that different institutions, with distinct purposes, can interact and work together to prepare qualified professionals for many areas of modern science and technology.

Supramolecular Approach in Energy Conversion Devices

“…The Ru-6 complex exhibited higher IPCE (ca. 60%) 184 when compared with its analogous ppy-(Ru-3 and 4) and isoquinoline-derivatives (Ru-5). 185 DSCs sensitized by Ru-10 exhibited a fair short-circuit photocurrent density (J SC ) of 8.00 mA cm -2 , open-circuit potential (V OC ) of 0.66 V and fill factor (ff) of 0.51.…”

“…40%). 178,183,184 The Ru-3 complex, with two different ancillary ligands, presented a broader spectral response at longer wavelengths when compared to the bis-coordinated 4-phenylpyridine (ppy) derivative Ru-4, showing an important role in the characteristic of the donor ligand in tuning photoelectrochemical properties. The Ru-6 complex exhibited higher IPCE (ca.…”

“…The development of solar cells became the main subject of a special program called CIUPE (Interinstitutional Collaborative Program for Strategic Researches), which was supported by the University of São Paulo and attracted researchers from several areas in the development of photovoltaics and had provided encouragement for cooperative efforts among different laboratories. 248 Research on OLEDs and LECs focused on multicolor, highly-emissive complexes and new techniques for device fabrication. For this purpose, many phosphorescent coordination compounds have played a prominent role in several applications.…”

Estudo dos mecanismos de fotodegradação de corantes sobre dióxido de titânio através de técnicas de espectroscopia Raman intensificadas

“…Outra razão reforça o interesse pelo estudo da interação entre corantes e TiO 2 . A utilização de certas classes de corantes em células solares vem sendo amplamente estudada 44,45 e, nesse sentido, estudos que levem a uma melhor compreensão do mecanismo de adsorção desses corantes sobre a superfície do semicondutor são relevantes para o desenvolvimento de células solares mais eficientes.…”