In situ minority carrier lifetime via fast modulated photoluminescence - Département de physique Accéder directement au contenu
Article Dans Une Revue EPJ Photovoltaics Année : 2023

In situ minority carrier lifetime via fast modulated photoluminescence

Résumé

Modulated photoluminescence (MPL) is a powerful technique for determining the effective minority carrier lifetime (τeff) of semiconductor materials and devices. MPL is based on the measurement of phase shifts between two sinusoidal waves (minimal amplitude excitation; and PL signal). In particular, in situ τeff has been proven to be an effective measurement at showing changes within a plasma-enhanced chemical vapor deposition reactor during fabrication of c-Si solar cells. However, the required time for a single measurement, using the previous method, was 40 s. In this paper a new input signal is proposed, called Dolphin's Wave, providing a method for decreasing the required measurement period to under 2 s, using superposition, frequency sweeps, and wavelets.
Fichier principal
Vignette du fichier
pv220069.pdf (328.18 Ko) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-04100621 , version 1 (17-05-2023)

Identifiants

Citer

Mateusz Poplawski, François Silva, Jean-Charles Vanel, Pere Roca i Cabarrocas. In situ minority carrier lifetime via fast modulated photoluminescence. EPJ Photovoltaics, 2023, 14, pp.19. ⟨10.1051/epjpv/2023010⟩. ⟨hal-04100621⟩
15 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More