Hysteresis-like behaviour of the thermoelectric voltage in photovoltaic materials

Ferrer, Isabel J.; Díaz-Chao, P.; Pascual, A.; Sánchez, Carlos

doi:10.1016/j.tsf.2005.12.095

Cited by 10 publications

(13 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before developing a theoretical explanation of the hysteretic behavior using the ENET, the experimental procedure and empirical results reported in [1] are reviewed.…”

Section: Physical Interpretation Of the Hysteretic Behaviormentioning

confidence: 99%

“…An experimental study for the measurement of the Seebeck coefficient in thin-film semiconductors has been published in [1], reporting a hysteretic behavior that prevents correct and unique measurements of this coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…Pyroelectric interactions were discussed and discarded in [1]. According to [4], the reason could be related with the heating and cooling speeds during the measurement process.…”

Section: Introductionmentioning

confidence: 99%

“…According to [4], the reason could be related with the heating and cooling speeds during the measurement process. For the second challenge, an empirical procedure without solid theoretical basis was proposed in [1], consisting on an analytical fitting of the experimental curves. An alternative explanation was proposed in [2], measuring the Seebeck coefficient uniquely at the heating branch.…”

Section: Introductionmentioning

confidence: 99%

“…Experiments for several materials performed in [1] are numerically replicated, and in addition a Sensitivity Analysis complemented by an IP is developed. In particular the FE-IP combination is employed for the characterization of the Seebeck coefficient and, in the future, for the optimization of solar cell efficiencies.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Study of hysteretic thermoelectric behavior in photovoltaic materials using the finite element method, extended thermodynamics and inverse problems

Palma

Pérez-Aparicio

Bravo

2013

Energy Conversion and Management

View full text Add to dashboard Cite

The main objective of the present work is to develop and prove a theoretical explanation based on the Extended Non-Equilibrium Thermodynamics (ENET) for the hysteretical thermoelectric behavior observed in certain thinfilm photovoltaic materials. The ENET introduces dissipative fluxes in the entropy balance that could explain this behavior. To verify this explanation from a numerical point of view, results are generated using a Finite Element (FE) formulation based on the ENET and already developed in previous publications by the authors. In addition, an identification Inverse Problem (IP) is formulated; a cost function is defined as the quadratic difference between experimental and numerical results and the IP is solved minimizing the cost function using genetic algorithms. The conclusion is that the loop-like distributions are due to energy dissipation introduced by dissipative fluxes that are closely related with relaxation times. Also, the FE-IP combination permits to find an approximated characterization of properties for several materials from single experimental curves. Finally, several numerical simulations are proposed for laboratory experiments to further validate

show abstract

“…Before developing a theoretical explanation of the hysteretic behavior using the ENET, the experimental procedure and empirical results reported in [1] are reviewed.…”

Section: Physical Interpretation Of the Hysteretic Behaviormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Pyroelectric interactions were discussed and discarded in [1]. According to [4], the reason could be related with the heating and cooling speeds during the measurement process.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study of hysteretic thermoelectric behavior in photovoltaic materials using the finite element method, extended thermodynamics and inverse problems

Palma

Pérez-Aparicio

Bravo

2013

Energy Conversion and Management

View full text Add to dashboard Cite

show abstract

Role of cation diffusion in the formation mechanism and properties of cobalt-doped n-type pyrite thin films

et al. 2013

View full text Add to dashboard Cite

Elasto-thermoelectric beam formulation for modeling thermoelectric devices

Palma

Moliner

Prez-Aparicio³

2017

Finite Elements in Analysis and Design

View full text Add to dashboard Cite

The present paper provides a dynamic, non-linear and fully coupled Finite Element (FE) formulation based on the Timoshenko beam theory to study elasto-thermoelectric responses in thermoelectric devices. The two main motivations of this work are: i) to study mechanical responses in thermoelectric devices, which must be taken into account in the design of Peltier cells due to the fragility and relative low strength of the semiconductors , and ii) to provide a numerical tool that decreases the CPU time to allow the introduction of designs based on optimization processes and on sensitivity analyses that could require many evaluations. In order to undertake the objectives of this work, the general three-dimensional governing equations are reduced to one-dimensional ones by means of several assumptions. Then, a set of five multi-coupled partial differential equations is obtained. The resultant expressions are thermodynamically consistent and form a multi-coupled monolithic FE formulation, differently to stagger formulations that require two separated steps to reach the final result. Numerically, this set of multi-coupled equations is discretized using the FE method and implemented into FEAP [1]. For a proper validation of the code, four benchmarks are performed using one-dimensional dynamic analytical solutions developed by the authors. Finally, this formulation is compared with a three-dimensional FE formulation also developed by the authors in [2] to model a commercial Peltier cell. This comparison reveals that: i) relative errors are lower than 13% and ii) CPU times decrease significantly, more than one order of magnitude. In conclusion, the beam thermoelectric formulation is an accurate model that reduces CPU time and could be used in future design of thermoelectric devices.

show abstract

Hysteresis-like behaviour of the thermoelectric voltage in photovoltaic materials

Cited by 10 publications

References 9 publications

Study of hysteretic thermoelectric behavior in photovoltaic materials using the finite element method, extended thermodynamics and inverse problems

Study of hysteretic thermoelectric behavior in photovoltaic materials using the finite element method, extended thermodynamics and inverse problems

Role of cation diffusion in the formation mechanism and properties of cobalt-doped n-type pyrite thin films

Elasto-thermoelectric beam formulation for modeling thermoelectric devices

Contact Info

Product

Resources

About