1 - 10 of 18 articles
Although power conversion efficiency (PCE) of state‐of‐the‐art perovskite solar cells has already exceeded 20%, photo‐ and/or moisture instability of organolead halide perovskite have prevented further commercialization. In particular, the underlying weak interaction of organic cations with...
A novel D‐A1‐D‐A2‐type polymer that exhibits a small bandgap of 1.43 eV yet still yields polymer solar cells with a high open‐circuit voltage (VOC) of 0.81 V and power conversion efficiencies of up to 8.63% is reported. Comparable efficiencies can be achieved even when the active layer is...
With the aim of fully utilizing the low processing temperatures of perovskite solar cells, significant progress in replacing high temperature processed TiO2 by various low‐temperature solution processed electron transporting layers (LT‐ETLs) was recently reported. Here, recent progress in the...
In article number 1500721, Jinsong Huang and co‐workers report that ion migration can be driven by illumination‐induced photovoltage in hybrid perovskite solar cells. As a result of photo‐induced ion migration, both the power conversion efficiency and stability of perovskite solar cells are...
In the past two years, non‐fullerene acceptors including polymers and small molecules have become the focus of many research efforts. Fullerene‐free organic solar cells (OSCs) have shown efficiencies of up to 6.8% for solution‐processed devices, and even up to 8.4% for vacuum‐deposited devices,...
Water ingress represents one of the major reliability concerns for the fabrication, storage, and operation of organic photovoltaic devices. In article number 1501065, Jens Adams and co‐workers track water‐induced photovoltaic degradation in organic solar cells using full frame thermographic and...
The improved performance achieved by combining tert‐butyl copper (II) phthalocyanine (CuPC) and po‐spiro‐OMeTAD as hole transporting material (HTM) for formamidinium lead iodide (FAPbI3)‐based perovskite solar cells is reported. A device efficiency of 19.4% under standard 1 sun is obtained.
Continuous illumination of the organometal trihalide perovskite (OTP) devices can cause the photovoltaic poling effect, termed light‐induced self‐poling (LISP), which improves the stabilized device efficiency significantly. The effect of LISP is comparable to the poling by an externally applied...
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