Abstract: A tandem solar cell and a method of manufacturing the same are provided. The tandem solar cell includes a bottom solar cell, a silicon suboxide thin film disposed over the bottom solar cell, a transparent conductive thin film disposed over the silicon suboxide thin film, and a top solar cell disposed on the transparent conductive thin film and series connected to the bottom solar cell. The silicon suboxide thin film has a refractive index of 2.0 to 3.5 for a visible light with a wavelength of 700 nm to 750 nm, and the transparent conductive thin film has a refractive index of 1.7 to 2.1 for the visible light with the wavelength of 700 nm to 750 nm. The tandem solar cell can achieve better optical matching and increase conversion efficiency.

Abstract: A solid-state storage device is provided, which is electrically connected to a host. The solid-state storage device includes a controller, a volatile memory, and a non-volatile memory. The controller divides the non-volatile memory into a plurality of functional regions. The controller sets a functional-region weight value corresponding to a priority of each functional region, and uses a weighted round robin mechanism to perform a number of access commands for each functional region according to the functional-region weight value of each functional region. The controller sets a submission-queue weight value corresponding to each submission queue within each functional region.

Abstract: A hydrogen generation method including steps as follows: adding a nitrogen-substituted derivative of an alkyldithiolate ruthenium complex as a biomimetic hydrogenase photocatalyst into a solution, adding an organic acid into the solution, adding a P-ligand into the solution, adding an electron donor into the solution, and irradiating the solution with light in order to generate hydrogen.

Abstract: A hydrogen generation method including steps as follows: adding a nitrogen-substituted derivative of an alkyldithiolate ruthenium complex as a biomimetic hydrogenase photocatalyst into a solution, adding an organic acid into the solution, adding a P-ligand into the solution, adding an electron donor into the solution, and irradiating the solution with light in order to generate hydrogen.

Abstract: A method for measuring a tilt angle of a pickup head. The method includes the steps of: moving the pickup head to a track to be measured; radiating a laser beam with a constant power; defining a proper range of tilt control values; controlling the tilt angle of the pickup head according to the range of tilt control values, acquiring a RF signal corresponding to each tilt control value, and storing an associated value of a associated signal; detecting the maximum among the stored associated values; selecting and storing the tilt control value corresponding to the maximum as the optimum tilt control value for the track if there is a maximum; and modifying the range of tilt control values and executing the previous steps if there is no maximum. The so-called associated signal includes a tracking error signal, a reading/writing RF signal, an S-curve signal, or the RF signal.

Abstract: A method for measuring a tilt angle of a pickup head. The method includes the steps of: moving the pickup head to a track to be measured; radiating a laser beam with a constant power; defining a proper range of tilt control values; controlling the tilt angle of the pickup head according to the range of tilt control values, acquiring a RF signal corresponding to each tilt control value, and storing an associated value of a associated signal; detecting the maximum among the stored associated values; selecting and storing the tilt control value corresponding to the maximum as the optimum tilt control value for the track if there is a maximum; and modifying the range of tilt control values and executing the previous steps if there is no maximum. The so-called associated signal includes a tracking error signal, a reading/writing RF signal, an S-curve signal, or the RF signal.

Abstract: A method for calibrating a relative tilt angle between a disc and a pickup head using a focus signal. The method includes the steps of moving the pickup head to a first position and performing the focusing operation; obtaining a first variation of a focus signal of the pickup head at a first position; moving the pickup head by a default distance to a second position and performing the focusing operation; obtaining a second variation of the focus signal of the pickup head at a second position; and calculating the relative tilt angle according to the default distance and the first and second variations. The focus signal includes a focus error signal and a focus control signal, both of which have been stored in a control circuit of an optical disc drive. Consequently, the invention utilizes the focus signal to detect the tilt angle of the pickup head without adding any displacement sensor.

Abstract: A method for measuring a tilt angle of a pickup head. The method includes the steps of: moving the pickup head to a track to be measured; radiating a laser beam with a constant power; defining a proper range of tilt control values; controlling the tilt angle of the pickup head according to the range of tilt control values, acquiring a RF signal corresponding to each tilt control value, and storing an associated value of a associated signal; detecting the maximum among the stored associated values; selecting and storing the tilt control value corresponding to the maximum as the optimum tilt control value for the track if there is a maximum; and modifying the range of tilt control values and executing the previous steps if there is no maximum. The so-called associated signal includes a tracking error signal, a reading/writing RF signal, an S-curve signal, or the RF signal.