Energy has played a key role in today’s human evolution. But the requirement in their elevated production has started showing burden on the environment with high rise in pollution and drastic climate change. The depleting natural resources and the concern of negative ecological effect of burning fossil fuels have raised the need for alternative regenerative energy sources. Solar energy in its abundant form is deemed to fulfil the increasing necessity for energy. Over the past few decades astonishing progress has been made in photovoltaic (PV) technologies, which offer a new pathway towards obtaining a clean and endless energy. The PV technologies such as hybrid organic-inorganic perovskite solar cells (PSCs) have paved to be a promising technology with record high 22% overall conversion efficiency. The formation of good quality perovskite films and use of effective hole transporting materials (HTMs) are the keys for achieving highly efficient PSCs. Here, we designed and synthesized new thieno-imidazole containing hydrophilic HTMs in inorganic (Li or Cs) or organic (TBA) salts form and with donor-donor or donor-acceptor combinations (<b>AI01-AI06</b>). When used in the inverted PSCs, the hydrophilic nature might assist the formation of better perovskite layers and afford higher efficiency. The synthesis of these new HTMs has been successfully accomplished and structurally characterized. Gathering of preliminary results like UV-vis absorbance, cyclic voltammetry, thermogravimetric analysis, and differential scanning calorimetry measurements of these newly synthesized HTMs has also been completed. These results along with the detailed investigation and optimization of the performance of the corresponding PSCs will be presented in the meeting.

Hydrophilic hole transporting materials for inverted perovskite applications

2019 Spring National Meeting

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