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Lifetime improvement of solar cells by an electron blocking layer.
This technology introduces an electron blocking layer between the two electrodes of a photoactive electronic device such as a solar cell. The electron blocking layer prevents the recombination of electrons and holes in the positive indium tin oxide (ITO) electrode and thus increases the lifetime and efficiency of the device. The electron blocking layer consists of polymers such as polycarboxy-polymers, quaternized polyamine-polymers, polysulphato-polymers, polysulpho-polymers or poly(vinylphosphonic acid).general problem electronic devices solar cells light emitting diodes undesirable hole-electron recombination positive electrode thereby efficiency lifetime

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