Method for operating a PV device having - a perovskite PV cell for converting light L which falls onto the perovskite PV cell into an electrical output voltage U1 which can be tapped at an electrical connection of the perovskite PV cell, as well as - a control unit for operating the PV device, wherein - the control unit is set up to monitor the PV device with regard to the occurrence of a situation from a list of specific situations and to operate it in such a way that in the case of the specific situation occurring, a bias voltage operating state of the PV device is triggered for a predetermined period, in which operating state an electrical bias voltage from an energy source (121, 121') is applied to a light-sensitive component of the perovskite PV cell, wherein the list of specific situations comprises: - a start-up of the perovskite PV cell and/or - a lack of lighting of the perovskite PV cell, wherein a light sensor for measuring lighting which falls onto the perovskite PV cell is provided, wherein the light sensor is connected to the control unit in order to transmit sensor data to the control unit, and the control unit is set up to evaluate the sensor data and to compare them with a lighting threshold value, wherein the specific situation of lack of lighting of the perovskite PV cell is present when the lighting threshold value is fallen below, and/or - a situation in which a measured variable which represents the instantaneous efficiency of the perovskite PV cell falls below a predetermined efficiency threshold value of the perovskite PV cell, and/or - a situation in which the instantaneous output voltage U1 of the perovskite PV cell falls below a predetermined minimum output voltage U1min, wherein a voltmeter for measuring the output voltage U1 of the perovskite PV cell is provided, wherein the voltmeter is connected to the control unit in order to transmit voltage measurement data to the control unit, and the control unit is set up to evaluate the voltage measurement data and to compare them with a voltage threshold value, wherein the specific situation of falling below the predetermined minimum output voltage U1 is present when the voltage threshold value is fallen below, and/or - an expiration of a predetermined time span since the last occurrence of a specific situation, characterized in that the control unit is set up to operate the PV device in such a way that in the case of the specific situation of lack of lighting of the perovskite PV cell occurring, the bias voltage operating state is only triggered if the lighting measured value exceeds a further lighting threshold value BS' after falling below the lighting threshold value BS. - a perovskite PV cell for converting light L which falls onto the perovskite PV cell into an electrical output voltage U1 which can be tapped at an electrical connection of the perovskite PV cell, as well as - a control unit for operating the PV device, wherein - the control unit is set up to monitor the PV device with regard to the occurrence of a situation from a list of specific situations and to operate it in such a way that in the case of the specific situation occurring, a bias voltage operating state of the PV device is triggered for a predetermined period, in which operating state an electrical bias voltage from an energy source (121, 121') is applied to a light-sensitive component of the perovskite PV cell, - a start-up of the perovskite PV cell and/or - a lack of lighting of the perovskite PV cell, wherein a light sensor for measuring lighting which falls onto the perovskite PV cell is provided, wherein the light sensor is connected to the control unit in order to transmit sensor data to the control unit, and the control unit is set up to evaluate the sensor data and to compare them with a lighting threshold value, wherein the specific situation of lack of lighting of the perovskite PV cell is present when the lighting threshold value is fallen below, and/or - a situation in which a measured variable which represents the instantaneous efficiency of the perovskite PV cell falls below a predetermined efficiency threshold value of the perovskite PV cell, and/or - a situation in which the instantaneous output voltage U1 of the perovskite PV cell falls below a predetermined minimum output voltage U1min, wherein a voltmeter for measuring the output voltage U1 of the perovskite PV cell is provided, wherein the voltmeter is connected to the control unit in order to transmit voltage measurement data to the control unit, and the control unit is set up to evaluate the voltage measurement data and to compare them with a voltage threshold value, wherein the specific situation of falling below the predetermined minimum output voltage U1 is present when the voltage threshold value is fallen below, and/or - an expiration of a predetermined time span since the last occurrence of a specific situation, characterized in that the control unit is set up to operate the PV device in such a way that in the case of the specific situation of lack of lighting of the perovskite PV cell occurring, the bias voltage operating state is only triggered if the lighting measured value exceeds a further lighting threshold value BS' after falling below the lighting threshold value BS.