10 results about "Absorption layer" patented technology

A quad photoreceiver includes a low capacitance quad InGaAs p-i-n photodiode structure formed on an InP (100) substrate. The photodiode includes a substrate providing a buffer layer having a metal contact on its bottom portion serving as a common cathode for receiving a bias voltage, and successive layers deposited on its top portion, the first layer being drift layer, the second being an absorption layer, the third being a cap layer divided into four quarter pie shaped sections spaced apart, with metal contacts being deposited on outermost top portions of each section to provide output terminals, the top portions being active regions for detecting light. Four transimpedance amplifiers have input terminals electrically connected to individual output terminals of each p-i-n photodiode.

The present disclosure passivates solar cell defects. Plasma immersion ion implantation (PIII) is used to repair the defects during or after making the solar cell. Hydrogen ion is implanted into absorption layer with different sums of energy to fill gaps of defects or surface recombination centers. Thus, solar cell defects are diminished and carriers are transferred with improved photovoltaic conversion efficiency.

The invention discloses a planar undoped heterojunction-perovskite laminated cell and a preparation method thereof, and relates to the technical field of solar cells. The cell comprises a perovskite top-layer solar cell and a heterojunction bottom-layer solar cell which are connected together, wherein the perovskite top-layer solar cell comprises a front metal electrode layer, a first transparentconductive oxide layer, a hole transport layer, a perovskite light absorption layer and an electron transport layer which are sequentially arranged from top to bottom; the perovskite light absorptionlayer comprises a perovskite layer A, a perovskite layer B and a perovskite layer C which are sequentially arranged from top to bottom; the forbidden band width of the perovskite layer A is 2.4 to 3.0ev; the forbidden band width of the perovskite layer B is 2.0-2.6 ev, the forbidden band width of the perovskite layer C is 1.9-2.2 ev; and the forbidden band widths of the perovskite layer A, the perovskite layer B and the perovskite layer C are sequentially reduced. The perovskite solar cell has the advantages that the photoelectric conversion efficiency exceeds 28%, the open-circuit voltage ishigh, and the generating capacity is increased.

The invention discloses a perovskite solar cell and a preparation method. The solar cell comprises a transparent substrate layer, a transparent anode layer, a layer gradient hole transport layer, a perovskite light absorption layer, an electron transport layer, an electron buffer layer and a metal cathode layer, which are arranged from bottom up, wherein the above layers are mainly prepared by anevaporation process. The solar cell provided by the invention has high open circuit voltage VOC and photoelectric conversion efficiency PCE, the maximum efficiency reaching 16.8%, the open circuit voltage reaching 1.05V and good stability.

The invention belongs to the technical field of solar energy utilization and particularly discloses a high-temperature-resisting multilayer solar selective absorbing coating and a preparing method thereof. The absorbing coating is composed of three layers, the top layer is a Cr2O3 reflection reducing layer, the middle layer is a CrAlON absorbing layer with the oxygen content as a gradual-changing structure, and the bottom layer is a CrAlSiN infrared reflecting layer. The CrAlON absorbing layer comprises the following ingredients of 30-36 at.% of Cr, 14-20 at.% of Al, 12-28 at.% of O and 22-38 at.% of N; and the oxygen content gradually increases from inside to outside. The CrAlSiN infrared reflecting layer comprises the following ingredients of 13-21 at.% of Cr, 30-40 at.% of Al, 6-10 at.% of Si and 32-40 at.% of N. The Cr2O3 top layer, the CrAlON middle layer with oxygen content as a gradual-changing structure and the CrAlSiN bottom layer of the coating all have good high temperature hardness and high-temperature oxidation resistance. The coating has the beneficial effects of being high in absorbing rate, low in emitting rate, high in combining strength and good in high-temperature stability. Furthermore, the coating can still have good spectral selection absorbing performance in the temperature of 550 DEG C.

The invention discloses a sound-absorption and warm-keeping mouse pad which comprises a pad body and a cover body detachably connected with the pad body, wherein buttons are arranged on the peripheral sides of the cover body; clamp rings corresponding to the buttons on the cover body are arranged on the pad body; the cover body is arc-shaped and comprises a warm-keeping layer, a sound-absorption layer and a waterproof layer from inside to outside sequentially; a wrist rest is arranged at one fourth of the pad body; massage beads are arranged on the wrist rest; and one end of the wrist rest is opened, and a matched plug is arranged at the opening. According to the provided sound-absorption and warm-keeping mouse pad, the temperature of a human hand can be effectively maintained, the mouse pad can be used even in cold winter, sound made by a mouse in the night environment can be effectively reduced, and rest of others cannot be disturbed; and besides, an excellent message effect can be produced on the waist, so that the mouse pad is practical and convenient.

The invention provides a composite plastic woven bag capable of retaining freshness, and belongs to the technical field of plastic woven bag processing. The composite plastic woven bag capable of retaining freshness comprises a water absorption layer, a woven layer and a protective layer from inside to outside in sequence. The water absorption layer comprises, by weight, 55-75 parts of polyurethane granules, 20-30 parts of polyethylene and 7-15 parts of loofah sponge fiber. The woven layer comprises, by weight, 60-70 parts of polypropylene granules, 20-30 parts of polyethylene and 5-10 parts of coolmax fiber. The composite plastic woven bag has excellent water absorption, moisture resistance, antibacterial and freshness-retaining properties, can delay deterioration of the quality of storedmaterials and prolong the storage time of the materials.