摘要:

Charge multiplication by hot carriers in semiconductors opens a new perspective for improved photovoltaic energy conversion. Here, we estimate the theoretical limit for the efficiency of solar cells that make use of the best possible carrier multiplication and have the lowest possible recombination loss, i.e., radiative recombination only. For a terrestrial cell under 100 mW/cm2air mass 1.5 global illumination, the uppermost efficiency amounts to 44.2%. Cells with internal carrier multiplication require a modified description of their saturation current density. ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.114719

出版商:AIP    

年代:1995

数据来源: AIP

摘要:

A novel method is presented for measuring the thicknesses of thin (<60 A˚) silicon dioxide (SiO2) films using the oscillations in the Fowler‐Nordheim tunneling currents. An important feature of the proposed method is that the accuracy of this method increases with decreasing oxide thickness and thicknesses changes of ∼1 A˚ can be detected. The oscillations are also used for measuring the average effective electron mass in the conduction band of SiO2. ©1995 American Institute of Physics

ISSN:0003-6951    

DOI:10.1063/1.114720

出版商:AIP    

年代:1995

数据来源: AIP

摘要:

The author proposes a mechanism for the efficient production of negative Hydrogen ions in a low−pressure Ar discharge plasma with methane using a novel pin−hollow cathode as reported in Appl. Phys. Lett. 63, 1619 (1993). (AIP) ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.114721

出版商:AIP    

年代:1995

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.114722

出版商:AIP    

年代:1995

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.115562

出版商:AIP    

年代:1995

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.115563

出版商:AIP    

年代:1995

数据来源: AIP