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The hygroscopic dopants used in Spiro‐OMeTAD hole transport material (HTM) in state‐of‐the‐art perovskite solar cells (PSCs) inevitably induce premature degradation of the devices. Here, two multifunctional polymer interface materials based on the perylene diimides (PDI) unit are developed. It is found that quasi‐two‐dimensional (2D) polymer 2DP‐PDI can form a denser film and exhibit better hydrophobicity...
The dominant hole transport material (HTM) in state‐of‐the‐art perovskite solar cells (PSCs) is Spiro‐OMeTAD, which needs to be doped using hydrophilic dopants to improve its hole mobility and conductivity, resulting in inferior device stability. Here, we propose an effective molecular design strategy to construct dopant‐free polymer HTMs by selecting four structurally related polymers and investigating...
The dominant hole transport material (HTM) in state‐of‐the‐art perovskite solar cells (PSCs) is Spiro‐OMeTAD, which needs to be doped using hydrophilic dopants to improve its hole mobility and conductivity, resulting in inferior device stability. Here, we propose an effective molecular design strategy to construct dopant‐free polymer HTMs by selecting four structurally related polymers and investigating...
Superior bandgap tunability enables solution‐processed halide perovskite a promising candidate for multi‐junction photovoltaics (PVs). Particularly, optically coupling wide‐gap perovskite by stacking with commercially available PVs such as silicon and CIGS (also known as 4‐terminal tandem) simplifies the technology transfer process, and further advances the commercialization potential of perovskite...