Luminescence and current-voltage characteristics of solar cells and optoelectronic devices

Smestad, Greg P.; Ries, Harald

doi:10.1016/0927-0248(92)90016-i

Cited by 126 publications

(66 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5 the vicinity of the dye as well as the concentration of the dye. The absorption of the final cell will be influenced by these factors, as well as the geometry of the device, which in turn determines the extent of light trapping and multiple reflections [12,20]. Therefore, the most relevant spectral response data is not found from Table 2 and suggest that with respect to photocurrent, the cell behaves as expected.…”

Section: Discussion Of I-v Curve Resultsmentioning

confidence: 80%

“…and 11-12% under diffuse natural daylight [6]. Calculations which consider the spectrum of the light utilized by the dye indicate that low cost cells of at least 10% efficiency could be realized [11,12]. What will be presented in this paper is that cells of at least 6% efficiency can indeed be produced using these techniques.…”

Section: Background History and Significancementioning

confidence: 81%

“…A possible reason for decreased performance is thus the series resistance of the cell which is in part due to the slow diffusion of the triiodide-iodide redox couple, and in part due to the sheet resistance of the conductive glass. A load resistor in "internal series" with the cell is known to effect the cell near the higher voltage values in the I-V plot [12,20]. From this region of Fig.…”

Section: Discussion Of I-v Curve Resultsmentioning

confidence: 99%

“…If ~" is in the range of 10-100 ps, which leads to kin j = 1011 to 1012 s -1 [6,23], one would estimate that the q~ value for the finished cell is in the range of 10 -8 to 10 -7 , which is beyond the instrument detection limits of 10 -5 to 10 -6. Such a large rate constant for charge injection has indeed been inferred from the nearly identical values for the fraction of the light absorbed at each wavelength, i.e., the absorptivity [11,12], and IPCE for the finished cell [6,9,10]. From Eqs.…”

Section: Discussion Of Photoluminescencementioning

confidence: 99%

“…This is in contrast to solid state or photoelectrochemical solar cells such as CdS, a:Si, Si, and GaAs which show at least weak luminescence [11,12]. One can estimate the expected photoluminescence efficiency from the lifetime, ~', of the excited state of the Ru dye molecules adsorbed on TiO2, which is given in Ref.…”

Section: Discussion Of Photoluminescencementioning

confidence: 99%

See 4 more Smart Citations

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

Smestad

Bignozzi²,

Argazzi³

1994

Solar Energy Materials and Solar Cells

Self Cite

321

View full text Add to dashboard Cite

Recently, a paper was published by the Lausanne Group headed by Dr. M. Graetzel which reported a simple low cost 7% efficient photo electrochemical solar cell made from a trinuclear Ru dye complex adsorbed on the very rough surface of a colloidal TiO 2 film. In the current paper, a verification of this result is presented using procedures described in the literature. Measurements are reported in simulated and natural sunlight which confirm that the efficiency is indeed in the range previously reported. Predicted Air Mass 1.5 photo currents are compared to those obtained from fabricated dye sensitized cells. Although current densities of 12 mA/cm 2 and voltages of over 0.6 V are measured, it is found that corresponding fill factors, less than 0.6, limit the performance of the cell under solar illumination. The basic economics of such a device are outlined and it is proposed that cell costs of $ 0.6 per peak watt could be possible if the longevity of the cell is at least 15 years.

show abstract

Section: Discussion Of I-v Curve Resultsmentioning

confidence: 80%

Section: Background History and Significancementioning

confidence: 81%

Section: Discussion Of I-v Curve Resultsmentioning

confidence: 99%

Section: Discussion Of Photoluminescencementioning

confidence: 99%

Section: Discussion Of Photoluminescencementioning

confidence: 99%

See 3 more Smart Citations

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

Smestad

Bignozzi²,

Argazzi³

1994

Solar Energy Materials and Solar Cells

Self Cite

321

View full text Add to dashboard Cite

show abstract

The Principle of Detailed Balance and the Opto‐Electronic Properties of Solar Cells

Rau

Kirchartz

2015

Photon Management in Solar Cells

View full text Add to dashboard Cite

show abstract

On the Origin of Hysteresis in Perovskite Solar Cells

Shen

Walter

et al. 2016

Adv Funct Materials

View full text Add to dashboard Cite

The origin of hysteresis behavior is probed in perovskite solar cells (PSCs) with simultaneous measurements of cell open circuit voltage (Voc) and photoluminescence intensity over time following illumination of the cell. It is shown, for the first time, that the transient changes in terminal voltage and luminescent intensity do not follow the relationship that would be predicted by the generalized Plank radiation law. A mechanism is proposed based on the presence of a resistive barrier to majority carrier flow at the interface between the perovskite film and the electron or hole transport layer, in combination with significant interface recombination. This results in a decoupling of the internal quasi‐Fermi level separation and the externally measured voltage. A simple numerical model is used to provide in‐principle validation for the proposed mechanism and it is confirmed that mobile ionic species are a likely candidate for creating the time‐varying majority carrier bottleneck by its reduced conductivity. The findings show that the Voc of PSCs may be lower than the limit imposed by the cell luminescence efficiency, even under steady‐state conditions.

show abstract

Luminescence and current-voltage characteristics of solar cells and optoelectronic devices

Cited by 126 publications

References 18 publications

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

Testing of dye sensitized TiO2 solar cells I: Experimental photocurrent output and conversion efficiencies

The Principle of Detailed Balance and the Opto‐Electronic Properties of Solar Cells

On the Origin of Hysteresis in Perovskite Solar Cells

Contact Info

Product

Resources

About