2022
DOI: 10.1002/pip.3628
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How small changes make a difference: Influence of low silver contents on the effect of RbF‐PDT in CIGS solar cells

Abstract: Despite the efficiencies above 20% achieved with (Ag,Cu)(In,Ga)Se2 (ACIGS) solar cells, further efficiency improvements are necessary. One possibility is the implementation of a postdeposition treatment (PDT) process. The aim of this study is therefore to investigate the effect of rubidium‐fluoride (RbF)‐PDT on the performance and physical properties of the ACIGS absorber. For this purpose, the RbF source temperature of the PDT process of ACIGS films with Ag/(Ag+Cu) (AAC) ratios of 5% from a multistage co‐evap… Show more

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Cited by 5 publications
(3 citation statements)
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“…For example, RbF-PDT leads to changes at the absorber surface with concomitant effects on interface properties and cell performance. 35,47,49 The V OC -deficit as a function of band gap extracted from EQE is depicted in Figure 5A. The minimum in V OC -deficit is located around a loss close to 0.1 V. The reason for this is the increasing band gap distribution (see Figure S4a).…”
Section: Resultsmentioning
confidence: 99%
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“…For example, RbF-PDT leads to changes at the absorber surface with concomitant effects on interface properties and cell performance. 35,47,49 The V OC -deficit as a function of band gap extracted from EQE is depicted in Figure 5A. The minimum in V OC -deficit is located around a loss close to 0.1 V. The reason for this is the increasing band gap distribution (see Figure S4a).…”
Section: Resultsmentioning
confidence: 99%
“…46 What remains unclear is the exact role of alkali-PDT in ACIGS, which might influence Urbach energy. The combination alkali-PDT for ACIGS absorbers is not yet fully understood with conflicting reports on beneficial/benign 19 and detrimental 47,48 effects. The usefulness of PDT thus depends on further deposition parameters possibly not consistently controlled for in different studies.…”
Section: Resultsmentioning
confidence: 99%
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