Optical Layout and Endstation Concept for the Enhanced Liquid Interface Spectroscopy and Analysis (ELISA) Beamline at BESSY-II

Vadilonga, Simone; Dumas, Paul; Schade, U.; Holldack, K.; Hinrichs, Karsten; Reichardt, G.; Gerber, Timm; Vollmer, Antje; Hofmann, Jan P.; Oertel, Holger; Rech, B.; Schlögl, Robert; Viefhaus, Jens; Bluhm, Hendrik

doi:10.1080/08940886.2022.2082213

Cited by 2 publications

(1 citation statement)

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“…Key to this beamline end station and unique capability complementing to the BelChem infrastructure will be the possibility of carrying out two‐color experiments which couple (NAP) soft X‐ray photoelectron and near‐edge X‐ray absorption fine structure spectroscopies with IR spectroscopy in order to gain specificity to molecular speciation. [ 342 ] Relevant model systems which must be studied will be ultrathin, defined water adsorbate layers on photoelectrodes (bare, protected, catalytically functionalized), with specifically designed potential control schemes. Thus, the platform under consideration would dramatically improve spectroscopic characterization of the different absorber structures under controllable model conditions approaching realistic (i.e., wet) solid–liquid and gas–liquid interfaces.…”

Section: Selected Scientific Key Challenges On Electronic Structure A...mentioning

confidence: 99%

Integration of Multijunction Absorbers and Catalysts for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and Materials Science Perspective

Hannappel,

Shekarabi,

Jaegermann

et al. 2024

Solar RRL

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Artificial leaves could be the breakthrough technology to overcome the limitations of storage and mobility through the synthesis of chemical fuels from sunlight, which will be an essential component of a sustainable future energy system. However, the realization of efficient solar‐driven artificial leaf structures requires integrated specialized materials such as semiconductor absorbers, catalysts, interfacial passivation, and contact layers. To date, no competitive system has emerged due to a lack of scientific understanding, knowledge‐based design rules, and scalable engineering strategies. Here, we will discuss competitive artificial leaf devices for water splitting, focusing on multi‐absorber structures to achieve solar‐to‐hydrogen conversion efficiencies exceeding 15%. A key challenge is integrating photovoltaic and electrochemical functionalities in a single device. Additionally, optimal electrocatalysts for intermittent operation at photocurrent densities of 10‐20 mA cm‐2 must be immobilized on the absorbers with specifically designed interfacial passivation and contact layers, so‐called buried junctions. This minimizes voltage and current losses and prevents corrosive side reactions. Key challenges include understanding elementary steps, identifying suitable materials, and developing synthesis and processing techniques for all integrated components. This is crucial for efficient, robust, and scalable devices. Here, we discuss and report on corresponding research efforts to produce green hydrogen with unassisted solar‐driven (photo‐)electrochemical devices.This article is protected by copyright. All rights reserved.

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Section: Selected Scientific Key Challenges On Electronic Structure A...mentioning

confidence: 99%