Adjusting the work function of the two electrodes to the energy levels of the intrinsic active materials of an organic solar cell is crucial for a good device performance. Often, injection barriers (in combination with selective contacts blocking one charge carrier species) caused by a misaligned metal work function or extraction barriers resulting from insulating intentional or unintentional i...

A flexible hybrid heterojunction PbS colloidal quantum dot solar cell, where the photoactive layers are deposited using a solution processed fabrication approach under ambient condition and at room temperature is presented. The bending stability of the obtained solar cell is evaluated. The results show that the solar cell exhibits high bending stability and even under the bent state the cell al...

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The performance and material quality requirements of thin film a-Si/c-Si1-xGex/Si heterojunction solar cells are investigated by modeling and simulation. The effects of Ge content, Si1-xGex thickness, Si1-xGex lifetime and a-Si/c-Si1-xGex interfacial quality have been studied. The simulations predict that Si1-xGex based thin film solar cells provide a significant increase in solar cell output c...