Spatial Energy Fluctuations Correlated to Fabrication Processes of CdSeTe/CdTe Thin-Films by Confocal Photoluminescence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00385420" target="_blank" >RIV/68407700:21230/25:00385420 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/PVSC59419.2025.11132629" target="_blank" >https://doi.org/10.1109/PVSC59419.2025.11132629</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/PVSC59419.2025.11132629" target="_blank" >10.1109/PVSC59419.2025.11132629</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Spatial Energy Fluctuations Correlated to Fabrication Processes of CdSeTe/CdTe Thin-Films by Confocal Photoluminescence

Popis výsledku v původním jazyce

CdTe-based thin film solar cells have been commercially successful for many years. CdCl2 treatment and Cu or group-V doping is now ubiquitous in high-performance solar cells. Further device improvement is currently limited by Voc and fill factor. There has been recent discussion about spatial energy fluctuation in CdTe-based solar cells which may be performance-limiting. One technique to probe spatial energy fluctuations is photoluminescence (PL) mapping. However, conventional PL measurements have spatial resolution no smaller than hundreds of microns because of laser spot size and can have artifacts from glass emission. Therefore, a confocal PL technique is implemented to reject glass emission and observe sub-micron spatially resolved PL. To elucidate the origin of energy fluctuations during device fabrication, the confocal PL measurements are carried out layer-by-layer, before and after treatment and doping. It is observed that the CdCl2 treatment process introduces spatial energy fluctuations and further Cu doping only increases this non-uniformity.

Název v anglickém jazyce

Spatial Energy Fluctuations Correlated to Fabrication Processes of CdSeTe/CdTe Thin-Films by Confocal Photoluminescence

Popis výsledku anglicky

CdTe-based thin film solar cells have been commercially successful for many years. CdCl2 treatment and Cu or group-V doping is now ubiquitous in high-performance solar cells. Further device improvement is currently limited by Voc and fill factor. There has been recent discussion about spatial energy fluctuation in CdTe-based solar cells which may be performance-limiting. One technique to probe spatial energy fluctuations is photoluminescence (PL) mapping. However, conventional PL measurements have spatial resolution no smaller than hundreds of microns because of laser spot size and can have artifacts from glass emission. Therefore, a confocal PL technique is implemented to reject glass emission and observe sub-micron spatially resolved PL. To elucidate the origin of energy fluctuations during device fabrication, the confocal PL measurements are carried out layer-by-layer, before and after treatment and doping. It is observed that the CdCl2 treatment process introduces spatial energy fluctuations and further Cu doping only increases this non-uniformity.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EH22_008%2F0004617" target="_blank" >EH22_008/0004617: Konverze a skladování energie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Conference Record of the IEEE Photovoltaic Specialists Conference

ISBN

—

ISSN

0160-8371

e-ISSN

—

Počet stran výsledku

3

Strana od-do

820-822

Název nakladatele

Institute of Electrical and Electronics Engineers

Místo vydání

New York

Místo konání akce

Montreal

Datum konání akce

8. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001572091100294