Monolithic All-Perovskite Tandem Solar Cells with Minimized Optical and Energetic Losses

Autor: Kunal Datta, Junke Wang, Dong Zhang, Valerio Zardetto, Willemijn H. M. Remmerswaal, Christ H. L. Weijtens, Martijn M. Wienk, René A. J. Janssen
Přispěvatelé: Molecular Materials and Nanosystems, ICMS Core, EIRES Chem. for Sustainable Energy Systems
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Advanced Materials, 34, 2110053
Advanced Materials, 34(11):2110053. Wiley-VCH Verlag
ISSN: 0935-9648
Popis: Perovskite-based multijunction solar cells are a potentially cost-effective technology that can help surpass the efficiency limits of single-junction devices. However, both mixed-halide wide-bandgap perovskites and lead-tin narrow-bandgap perovskites suffer from non-radiative recombination due to the formation of bulk traps and interfacial recombination centers which limit the open-circuit voltage of sub-cells and consequently of the integrated tandem. Additionally, the complex optical stack in a multijunction solar cell can lead to losses stemming from parasitic absorption and reflection of incident light which aggravates the current mismatch between sub-cells, thereby limiting the short-circuit current density of the tandem. Here, an integrated all-perovskite tandem solar cell is presented that uses surface passivation strategies to reduce non-radiative recombination at the perovskite-fullerene interfaces, yielding a high open-circuit voltage. By using optically benign transparent electrode and charge-transport layers, absorption in the narrow-bandgap sub-cell is improved, leading to an improvement in current-matching between sub-cells. Collectively, these strategies allow the development of a monolithic tandem solar cell exhibiting a power-conversion efficiency of over 23%.
Databáze: OpenAIRE
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