Stimulated emission of II–VI epitaxial layers

Klingshirn, C.; Kalt, H.; Umlauff, M.; Petri, W.; Majumder, F. A.; Bogdanov, S. V.; Langbein, Wolfgang Werner; Grün, M.; Hetterich, M.; Geyzers, K.P.; Heuken, M.; Naumov, A.; Stanzl, H.; Gebhardt, W.

doi:10.1016/0022-0248(94)90907-5

Cited by 28 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our study shows that excitons are more stable and diffusible than electrons at very low temperatures. This is confirmed by researchers in this field [13][14][15]. In addition, a disorderly increase in carrier density was observed.…”

Section: Discussionsupporting

confidence: 84%

Numerical Study of the Effect of Temperature on the Performance of a Silicon Heterojunction Solar Cell (HIT) in the Presence of Excitons

Ngom¹,

Faye²,

Mbaye³

et al. 2019

IJMSA

View full text Add to dashboard Cite

In this article, a detailed study of the physical phenomena in the base of a silicon heterojunction solar cell (HIT) is elaborated. To carry out this work we have established a mathematical model which is in the form of a system of two continuity equations. The latter are subjected to physical conditions of nature to define our field of study. This system of continuity equations is solved using a computational program in a digital programming language. Numerical analysis is used in this study because the mathematical system describing the transport phenomena of load carriers (electrons and excitons) in a silicon heterojunction photovoltaic cell is very complex. Thus, to facilitate numerical resolution, the dimensional parameters of the physical system are rendered dimensionless. The resulting dimensionless equations are discretized by the finite volume method. They are then implemented in a calculation program by an iterative line-by-line relaxation method of the Gauss-Siedel type. In addition, with a low density coupling coefficient b=10 -16 cm 3 s -1 that depends on the material's properties, the influence of temperature on the diffusion lengths, on the carrier and photocurrent densities, and on the internal quantum yield is studied. This study is carried out using polychromatic illumination with ultraviolet, visible and infrared wavelengths.

show abstract

Section: Discussionsupporting

confidence: 84%

Numerical Study of the Effect of Temperature on the Performance of a Silicon Heterojunction Solar Cell (HIT) in the Presence of Excitons

Ngom¹,

Faye²,

Mbaye³

et al. 2019

IJMSA

View full text Add to dashboard Cite

show abstract

“…For a hydrogen‐like exciton series the emission maxima are situated around 87 where E g ( T ) is again the temperature dependent gap energy, $E_{\rm b}^{\rm X} $ the exciton binding energy, k B Boltzmann's constant and δ has a value of 0 < δ < 1, (typically δ ≈ 0.5). The laser emission occurs in this, like in many other processes 88, often on the low energy side of the maximum. The X–X process has been observed in many semiconductors including ZnO 28, 91.…”

Section: Stimulated Emissionmentioning

confidence: 69%

65 years of ZnO research – old and very recent results

Klingshirn

Fallert

Zhou

et al. 2010

Physica Status Solidi (b)

Self Cite

383

244

View full text Add to dashboard Cite

The research on ZnO has a long history but experiences an extremely vivid revival during the last 10 years. We critically discuss in this didactical review old and new results concentrating on optical properties but presenting shortly also a few aspects of other fields like transport or magnetic properties. We start generally with the properties of bulk samples, proceed then to epitaxial layers and nanorods, which have in many respects properties identical to bulk samples and end in several cases with data on quantum wells or nano crystallites. Since it is a didactical review, we present explicitly misconceptions found frequently in submitted or published papers, with the aim to help young scientists entering this field to improve the quality of their submitted manuscripts. We finish with an appendix on quasi two-and one-dimensional exciton cavity polaritons.

show abstract

“…It is also noteworthy that a marked shoulder is identified as higher laser intensities. The emission mechanisms of II-VI compounds under high excitation have been studies extensively [32]. As the excitation intensity increases, exciton densities become sufficiently high to cause interaction.…”

Section: Resultsmentioning

confidence: 99%

Preparation, characterization and optical properties of nanostructured ZnO thin films

Tang

2004

Optical Materials

View full text Add to dashboard Cite

Stimulated emission of II–VI epitaxial layers

Cited by 28 publications

References 20 publications

Numerical Study of the Effect of Temperature on the Performance of a Silicon Heterojunction Solar Cell (HIT) in the Presence of Excitons

Numerical Study of the Effect of Temperature on the Performance of a Silicon Heterojunction Solar Cell (HIT) in the Presence of Excitons

65 years of ZnO research – old and very recent results

Preparation, characterization and optical properties of nanostructured ZnO thin films

Contact Info

Product

Resources

About