Indoor Organic Photovoltaics: Optimal Cell Design Principles with Synergistic Parasitic Resistance and Optical Modulation Effect. Issue 27 (15th January 2021) - Saeed, Muhammad Ahsan
Abstract: Recently, indoor organic photovoltaics (OPVs) has attracted substantial research attention, due to the emergence of self‐powered electronic devices for Internet‐of‐Things (IoT) applications. This progress report discusses recent developments in indoor OPVs, focusing on the strategic role of synergistic parasitic resistance in suppressing the leakage current to achieve high indoor efficiencies. Moreover, an underexplored area is presented, namely the impact of optical modulation on enhancing light absorption in indoor OPVs. First, the main advances in material design for indoor OPVs are briefly presented. This is followed by detailed discussions of the crucial strategies, including interfacial engineering, the effect of photoactive layer thickness, and the effectiveness of transparent conducting electrodes for improving the OPV performance. Overall, this review highlights that understanding the indispensable role of parasitic resistance under dim light conditions may provide new opportunities for developing efficient indoor OPVs for practical applications. Finally, after summarizing recent progress in indoor OPVs, a critical perspective is provided. Abstract : Research on indoor organic photovoltaics (OPVs) over the last five years is discussed. Focusing on the indoor environment (much lower luminance, diverse emission spectra, etc.), reported photoactive layer materials are discussed. Then, the efforts to improve indoor OPV performance by utilizing synergistic parasitic resistance and optical modulation are described. Finally, a description of the relevant optical simulation methods is provided.