Can perovskite heterojunctions be made?

The fabrication of perovskite heterojunctions is challenging. Mali et al. develop a heterojunction with two different crystalline phases of CsPbI3, achieving 21.5% and 18.4% efficiencies on small-area solar cells and 18 cm2 solar modules, respectively.

Can a heterojunction tune energy levels into perovskites?

This study considers the in situ introduction of a heterojunction capable of tuning energy levels into perovskites, where the energy level difference and the construction of a built-in electric field greatly improve the separation and migration efficiency of photogenerated carriers.

Are -cspbi3 perovskite PHJ solar cells effective?

We demonstrate the approach by forming γ-CsPbI3/β-CsPbI3 perovskite PHJ solar cells. We find that all of the photovoltaic parameters of the PHJ device significantly surpass those of each of the single-phase devices, resulting in a maximum power conversion efficiency of 20.1%.

What is integrated perovskite/organic bulk-heterojunction (BHJ) solar cell?

Integrated perovskite/organic bulk-heterojunction (BHJ) solar cells (IPOSCs) have been developed to extend the photoresponse of perovskites in the near-infrared region. Serious charge recombination at the perovskite/organic BHJ interface always reduces the open-circuit voltage (VOC) and filling factor (FF).

Are all-perovskite tandem solar cells stable?

By integrating with the thermal-stable FAPb 0.5 Sn 0.5 I 3 narrow-bandgap perovskites, our all-perovskite tandem solar cells exhibit a stabilized PCE of 28.1% and retain 90% of the initial performance after 855 hours of continuous 1-sun illumination.

Can perovskite single-junction cells be used to develop tandem cells?

We then adapted the perovskite single-junction cells to develop tandem cells (1.015 cm 2) on fully textured CZ silicon bottom cells (see Figure S35). The schematic device architecture with a highlight of the 3D/3D perovskite heterojunction at the buried interface is illustrated in Figure 4 A.