Please, do not hesitate to contact us via, if the below content is still not covering your assistance needs. Take a look at our introductory video below to get a quick feel how to use the website.

Should I provide the EQE (IPCE) spectrum?

Yes, only those published articles including the external quantum efficiency (incident photon to collected current electron ratio) spectrum will be considered for the emerging PV reports. These spectra provide both, validation to the photocurrent value from the current-voltage characteristic, and evaluation of the photovoltaic bandgap energy.

What bandgap energy definition should I use?

The emerging PV reports relates with the bandgap extracted form the inflection point of the EQE in the absorption threshold region of the spectrum. This is herein called the photovoltaic bandgap energy (Eg). A sigmoid parameterization is recommended, and intended to be automatically implemented in the section My cells.

The optical bandgap energy, e.g. from the absorption Tauc plots, can be additionally provided. But in any case, it should characterize the complete device rather than a single independent film of the absorber material.

What minimum information should I include in my published articles?

Your article must provide evidence on the performance parameters from the current density-voltage (J-V) curve, the bandgap from the EQE spectrum and a description in the experimental section allowing reproduction of the results. Similarly, for transparency applications, the transmittance (T) spectra should be included with the calculation of the the average visible transmittance (AVT). For stability tests, all the degradation conditions should be specified (including initial and final efficiencies under standard conditions). The following table summarizes the minimum requirements.

i*Efficiency under standard test conditions (1 sun AM1.5G illumination, 25ºC):
·       Performance parameter values from J-V curve (PCE, Voc, Jsc, and FF).
·        Area (surface value and type: total, aperture or designated).
·        Solar simulator (type, standard, model and brand).
·       Measurement conditions (temperature, air or N2-atmosphere, whether a black matte background was used).
J-V curve
ii*Photovoltaic bandgap:
·       Eg from EQE using the sigmoid parameterization for the inflection point in the absorption threshold.
·       Jsc  value from EQE .
·        Used instrument for EQE (model and brand).
·        Measurement conditions (temperature, air or N2-atmosphere, whether a black matte background was used).
EQE spectrum
iii*Absorber material:
Experimental section: description of structure and fabrication procedure allowing reproduction of the results.
Optional figure/data
iv.aPhotostability test:
·       Degradation conditions (e.g. MPP, OC, SC).
·       Illumination spectrum (e.g. AM1.5G, UV filter model & brand).
·       Illumination intensity (e.g. 100 mW cm-2, provide information on how intensity was tracked).
·       Measurement conditions: temperature, atmosphere (air with RH or inert N2/Ar), instrument (model & brand or self-made).
·       Integrated output energy for 200 h and 1000 h under 1 sun illumination (E200h and E1000h).
·       PCE (including EQE) after 200 h and 1000 h (measured as in “i”)
Non normalized (or including initial absolute value) PCE-t degradation record
iv.bTransparent and semitransparent PVs
·       AVT value (you can use the calculator provided in the “Data S1” of the work by Yang et al.)
·       Aesthetics (e.g. CRI or (a, b))
·       Used instrument for T and R (model and brand)
·       Measurement conditions (temperature, air or N2-atmosphere, whether a black matte background was used)
T– and R spectra
iv.cFlexible PV
·       Substrate thickness
·       Minimum radius the solar cell was bent to without reducing <5% performance output
·       Measurement conditions
Cross section/bending picture

What is ORCID? How do you use the data?

ORCID stands for Open Researcher and Contributor iD. It is an organization that aims at providing an open registry of academic and scientific authors. Moreover, it provides a mechanism for linking research outputs and activities to ORCID iDs. In many cases, the ORCID logo indicates data or information linked to ORCID.

We are using ORCID to authenticate users on and link their contributions to the database. Once authenticated, any cell that you submit is linked to your ORCID iD as submitting author. If provided, we use your email address to notify you upon completed review of your submitted cells.

More information regarding ORCID is provided on their web page.