Investigation of the quenching mechanisms of the porous silicon luminescence

Photoelectrochemical and Photoluminescence (PL) Properties of p-Type Porous Silicon/Electrolyte Solution Interface: Potential Dependent PL Spectra as a Result of Size Dependent Quenching

“…The change in the excitation light intensity did not affect the shape of the PL spectra but affected the PL intensity. Although PL spectra from the PS/electrolyte solution interface were reported by Bsiesy et al and Meulenkamp et al on n-PS in 1.0 M H 2 SO 4 solution, the peak wavelength was ca. 700 nm.…”

“…Interest in PS has been stimulated by the discovery of voltage-induced wavelength tuning of EL and photoluminescence (PL). , PL measurements are often used to determine the quantum efficiency of photoelectrochemical reactions and to probe potential distributions across semiconductor electrode/electrolyte solution interfaces . Thus, one can expect that PL measurements of PS/electrolyte solution interfaces provide useful information on the nature of PS.…”

“…Thus, one can expect that PL measurements of PS/electrolyte solution interfaces provide useful information on the nature of PS. Only few reports on PL of PS/electrolyte solution interfaces are available, and they are on n-PS in the forward bias condition. , …”

Generation and Quenching of Luminescence in n-Type Porous Silicon/Solution Diodes: Role of Adsorbed Hydrogen

“…The essential features of the results obtained with peroxydisulfate are shown in Figure . − The current−potential curve (a) is that typical of n-type porous silicon prepared from moderately doped material. , Reduction of S 2 O 8 2- begins between −0.5 and −0.7 V, measured with respect to the saturated calomel electrode (SCE). ,,, A current plateau is often observed due to mass transport of the oxidizing agent to the electrode surface. At more negative potentials, the current increases as a result of hydrogen evolution.…”

Visible Electroluminescence from n‐Type Porous Silicon/Electrolyte Solution Interfaces: Time‐Dependent Electroluminescence Spectra

“…[11][12][13][14] Most of the studies reported so far have concentrated on the PL properties of PS. [15][16][17][18][19][20][21][22] Electroluminescence (EL) is, however, more important as far as technological application is concerned. In this respect, Koshida and Koyama demonstrated that a transparent metal/PS/p-Si/Al cell emits EL (orange) at relatively low applied voltage, although the quantum efficiency was quite low (<10 Ϫ5 %).…”