TWI440194B - Photoelectric module and lighting method thereof - Google Patents

Description

Photoelectric module and light emitting method thereof

The invention relates to a photoelectric module and a light emitting method thereof, and particularly to a photoelectric module having a light emitting device and a photoelectric conversion device and a light emitting method thereof.

In recent years, there have been many applications in the field of biotechnology, such as the application of light-emitting elements to physical therapy such as plant growth or skin care. For example, human body treatment with a light-emitting element is not only safe, painless, but also has no side effects. For example, the effect of red light (wavelength about 635 nm) on the human body, its depth and effect can reach the submucosal layer of the skin, thus promoting the metabolism of local tissues, thereby achieving the effect of accelerating wound healing, and thus many uses Light-emitting elements for physical phototherapy applications.

However, the above-mentioned illuminating instruments used for human body treatment are all large-scale instruments, so they are not easily moved at any time due to factors such as volume and power demand, and therefore it is usually necessary to perform related treatments at a fixed location. This is inconvenient for the user.

The invention provides a photoelectric module and a light emitting method thereof, which have better portability and luminous efficiency.

An embodiment of the invention provides a photovoltaic module comprising a light emitting device and a photoelectric conversion device. The light emitting device has a first electrode. The photoelectric conversion device is disposed on the light emitting device, and the photoelectric conversion device has a second electrode and a photoelectric element, wherein the first electrode and the second electrode are translucent. The photovoltaic element is configured to pass light having a penetration wavelength and convert light having an absorption wavelength into electrical energy, and the absorption wavelength is less than the penetration wavelength.

An embodiment of the present invention provides a method for emitting light of a photoelectric module, comprising: starting a photoelectric conversion device to enable light having a penetrating wavelength to penetrate the light emitting device; and activating the photoelectric conversion device to enable light having an absorption wavelength to be photoelectrically converted The device absorbs to generate electrical energy and the absorption wavelength is less than the penetration wavelength.

In an embodiment of the invention, the light emitting device further has a first substrate, and the first electrode is disposed on the first substrate. The photoelectric conversion device further has a second substrate, and the photoelectric element and the second electrode are disposed on the second substrate, wherein the first substrate and the second substrate have light transmissivity.

In an embodiment of the invention, the first substrate and the second substrate have flexibility.

In an embodiment of the invention, the first substrate and the second substrate are integrally formed in a plate-like structure, and the first electrode and the second electrode are respectively located on opposite surfaces of the plate-like structure.

In an embodiment of the invention, a control device is further included, and the light emitting device and the photoelectric conversion device are electrically connected. The control device activates or deactivates the illumination device depending on the state of the photoelectric conversion device.

In an embodiment of the invention, a power storage device is further included, and the second electrode is electrically connected. The electrical energy generated by the optoelectronic component is transmitted via the second electrode and stored to the electrical storage device.

In an embodiment of the invention, a photo sensor is further included, and the control device is electrically connected.

In an embodiment of the invention, the method further comprises: when the photoelectric conversion device is activated, the light-emitting device generates light having a wavelength of penetration.

In an embodiment of the invention, the method further comprises: turning off the illumination device when the photoelectric conversion device is activated.

In an embodiment of the invention, the photoelectric module further includes a power storage device electrically connected to the light emitting device and the photoelectric conversion device, and the light emitting method of the photoelectric module further comprises the photoelectric conversion device absorbing light having an absorption wavelength. The converted electrical energy is stored to the electrical storage device.

In an embodiment of the invention, the power storage device transmits the stored electrical energy to the illumination device.

Based on the above, in the above embodiment of the present invention, the photoelectric module drives the light-emitting device correspondingly by integrating the light-emitting device and the photoelectric conversion device, and based on whether the photoelectric conversion device is activated or not, so that the photoelectric module is in the Under any circumstances, red light with a certain wavelength range can be generated. Furthermore, when the photoelectric conversion device is activated, the red light of a certain wavelength range can be passed to achieve the desired effect of the photovoltaic module, and the light of a fixed wavelength range can be absorbed and converted into electrical energy for storage. In the environment where the power storage device is placed and the photoelectric module is inoperable, the light-emitting device can be activated to maintain the performance of the photovoltaic module.

The above described features and advantages of the present invention will be more apparent from the following description.

1 to 3 are schematic views of a photovoltaic module in different states according to an embodiment of the invention. It should be noted here that FIG. 1 to FIG. 3 respectively show the state of electrical conduction between components and the direction of power transmission by thick solid lines and arrows. Referring to FIG. 1 and FIG. 2 , in the embodiment, the photoelectric module 100 includes a light emitting device 110 , a photoelectric conversion device 120 , and a control device 130 .

The light emitting device 110 is, for example, an organic light emitting diode having a first electrode 112. The photoelectric conversion device 120 is, for example, a solar cell, which can be disposed on the light-emitting device 110 by means of a sealant, but the bonding relationship between the light-emitting device 110 and the photoelectric conversion device 120 is not limited herein. The photoelectric conversion device 120 has a second electrode 122 and a photovoltaic element 124. Here, the first electrode 112 and the second electrode 122 are translucent, and the photovoltaic element 124 is, for example, a photoelectric conversion layer of a solar cell, and the photovoltaic element 124 can be regarded as a light valve or a filtering device, which can be used for a specific wavelength. Light penetrates, and light outside a specific wavelength does not penetrate. In this embodiment, the optoelectronic component 124 will absorb light outside of a particular wavelength. For example, light of a specific wavelength may be L1, so that light of various wavelengths may pass through the photovoltaic element 124 after passing through the photovoltaic element 124. In other words, the photo-element 124 in the present embodiment is used to pass the light L1 having a penetrating wavelength and absorb the light L2 having an absorption wavelength to be converted into electric energy, wherein the wavelength range of the light L2 having the absorption wavelength is smaller than the wavelength of the penetration. The range of light rays L1.

In this embodiment, the control device 130 is electrically connected to the light-emitting device 110 and the photoelectric conversion device 120, and the control device 130 activates or turns off the light-emitting device 110 according to the state of the photoelectric conversion device 120. In another embodiment, the external light energy can be detected by a light sensor (not shown), and the light sensor provides a signal to the control device 130 to control the activation or deactivation by sensing the ambient light energy. The illumination device 110 or the control device 130 is a light sensor that directly detects ambient light. However, it is not limited to the above method, and the light-emitting device can be turned on or off by manual control.

Further, the light-emitting device 110 further has a first substrate 116 and an organic light-emitting layer 114, the first electrode 112 includes a pair of first electrode layers 112a, 112b, and the first electrode layers 112a, 112b are disposed at the first The substrate 116 is disposed between the pair of first electrode layers 112a and 112b. In the present embodiment, the organic light-emitting layer 114 is used to generate light L3 having an emission wavelength, which is, for example, red light having a wavelength range of 580 nm to 800 nm, and the pair of first electrode layers 112a, 112b are, for example, It is a transparent conductive oxide (TCO) such as indium tin oxide (ITO), indium zinc oxide (Indium Zinc Oxide, IZO), or silver (Ag), gold (Au), aluminum. a metal thin film having a thickness of less than 30 nanometers (nm) such as (Al), magnesium (Mg), or calcium (Ca). In the present embodiment, when the thin metal film is light transmissive, it can be used. The characteristics of different metal films are chosen to ensure proper light transmission.

Furthermore, the photoelectric conversion device 120 further has a second substrate 126, and the second electrode 122 includes a pair of second electrode layers 122a, 122b, and the second electrode layers 122a, 122b are disposed on the second substrate 126. For the second electrode layers 122a, 122b, the photovoltaic element 124 is disposed between the pair of second electrode layers 122a, 122b. Here, the second electrode layers 122a and 122b may be made of the same material as the first electrode layers 112a and 112b. Based on the above, light that penetrates the second electrode layers 122a, 122b and the photovoltaic element 124 can also penetrate the first electrode layers 112a, 112b. Therefore, when light having various wavelengths passes through the photovoltaic element 124, the light having the wavelength of penetration L1 can penetrate the photovoltaic element 124 and the respective electrode layers, so that the photovoltaic module 100 can generate the light L1 having the wavelength of penetration, and When the organic light-emitting layer 114 of the light-emitting device 110 generates the light L3 having the light-emitting wavelength, the light-emitting wavelength L3 of the light-emitting wavelength can also penetrate the electrode layers, so that the photovoltaic module 100 can generate the light L3 having the light-emitting wavelength. For example, when the wavelength of the light passing through the wavelength L1 is 600 nm to 1100 nm, and the wavelength of the light passing through the wavelength L3 is 580 nm to 800 nm, the light emitted from the photovoltaic module 100 It is red light in the wavelength range of 580 nm to 1100 nm.

In addition, FIGS. 4A to 4C are flowcharts of a method of emitting light according to the photovoltaic module of FIGS. 1 to 3. Referring to FIG. 1 to FIG. 3 and FIG. 4A to FIG. 4C respectively, in the embodiment, the photoelectric module 100 further includes a power storage device 140 electrically connected to the control device 130, and at the first The electrode layers 112a and 112b are interposed between the second electrode layers 122a and 122b.

Accordingly, in step S410, the control device 130 detects the state of the photoelectric conversion device 120. Next, in step S420, when the photoelectric conversion device 120 is in an active state, the control device 130 turns off the illumination device 110. At this time, the photovoltaic element 124 absorbs and converts the light L2 having the absorption wavelength into electric energy. Then, in step S430, the control device 130 activates the power storage device 140 to transmit and store the electrical energy to the power storage device 140 via the second electrode layers 122a, 122b (as shown in FIG. 1). In the present embodiment, when the photoelectric conversion device 120 converts the absorption wavelength light L2 into electric energy, the electric energy is smaller than the energy of the light-emitting device 110, and therefore, the electric storage device 140 is required to store the electric energy generated by the photoelectric conversion device 120 first. After the accumulation, the light-emitting device 110 is driven again. In addition, the use of the power storage device 140 to conserve electrical energy can also increase the flexibility of the timing of using electrical energy.

In other words, when the photovoltaic module 100 is in the environment illustrated in FIG. 1 (which can be regarded as a daytime environment), external light (including light L2 having an absorption wavelength and light L1 having a wavelength of penetration) is irradiated to the photoelectric conversion device 120. The light L2 having the absorption wavelength is absorbed by the photoelectric element 124 and converted into electrical energy and stored in the electrical storage device 140, and the light L1 having the wavelength of penetration penetrates the photoelectric conversion device 120 and the light-emitting device 110, so that the photoelectric The module 100 can generate electric energy by the photoelectric conversion device 120 and has a luminous effect of the light beam L1 penetrating the wavelength.

In contrast, when referring to FIG. 2 and FIG. 4B, when the photovoltaic module 100 is in the environment depicted in FIG. 2 (serving as a nighttime or darkroom environment), no external ambient light is available for the photoelectric conversion device 120 to operate. Therefore, the photoelectric conversion device 120 is substantially in an unactuated state, so in step S440, the control device 130 activates the power storage device 140 to transfer the electrical energy therein to the light emitting device 110, so that the photovoltaic module 100 is The light source L3 having the light-emitting wavelength can be generated at night, so that the photoelectric module 100 can maintain the normal operation of the photovoltaic module 100, that is, the photoelectric module 100 of the present embodiment can have the light-emitting wavelength L3 at any time by the above two states. Or light beam L1 that penetrates the wavelength. However, the embodiment is not limited thereto. Referring to FIG. 3 and FIG. 4C, in step S450, when the photoelectric conversion device 120 is in an active state, the control device 130 also activates the power of the power storage device 140 to be transmitted to the light-emitting device 110. Both the light-emitting device 110 and the photoelectric conversion device 120 are in an active state, so that the photovoltaic module 100 can simultaneously have the light-emitting wavelength L3 and the light-transmitting light L1. For example, the photovoltaic module 100 can generate red light having a wavelength range of 580 nm to 1100 nm (ie, having both the illuminating wavelength ray L3 and the penetrating wavelength ray L1). This allows the related equipment to which the photovoltaic module 100 is applied to be free from environmental light sources. For example, in the field of biomedicine, physical light therapy of the human body is usually performed using red light (wavelength of about 635 nm), so when the physical phototherapy device is applied When the photovoltaic module 100 of the invention is invented, it can be affected by the region and time. Moreover, when the photovoltaic module 100 is miniaturized, it can be attached to the human body, and since the photovoltaic module 100 can be operated at any time and any place, the physical phototherapy can have better therapeutic effects. Therefore, in this embodiment, the penetrating wavelength light L1 is a wavelength of a red light range, and the absorption wavelength light L2 is a wavelength outside the infrared range. For example, the wavelength of the blue or green light range may be such that the wavelength of the wavelength L2 is absorbed. Less than the penetration wavelength.

However, the present invention is not limited thereto, and different photovoltaic element 124 materials may be selected according to different needs to obtain appropriate absorption/transmission wavelength light (L2/L1). For example, the absorption wavelength L2 may be ultraviolet light. The wavelength, the wavelength of penetration, can be a yellow wavelength for use as an indoor illumination. Similarly, a suitable organic light-emitting layer 114 material may be selected to conform to the desired light-emitting wavelength of light L3. In addition, the design of the absorption/transmission/emission wavelength can also be switched according to different designs. For example, the transmission wavelength (light L1) can be the same as the emission wavelength (light L3), or can be different or have a partial overlapping range. In other words, in the present embodiment, the transmitted wavelength light L1 is the wavelength of the red light range, and the light emission wavelength light L3 is also the wavelength of the red light range. In another embodiment, the transmitted wavelength light L1 is a wavelength of a red light range, and the light emission wavelength L3 is a wavelength of a red light and a yellow light range.

On the other hand, the first substrate 116 of the light-emitting device 110 and the second substrate 126 of the photoelectric conversion device 120 are, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN). Or made of polycarbonate (PC), the first substrate 116 and the second substrate 126 have light transmissivity and flexibility by the characteristics of the material, wherein the transmittance of the substrates 116, 126 The light-emitting wavelength light L3 or the light-transmitting light L1 is passed through, and the flexibility is used to allow the photovoltaic module 100 to freely deform and increase the applicable range. In addition, in the embodiment, the first substrate 116, the second substrate 126, the first electrode layer 112, and the second electrode layer 122 are translucent, so that both the through-wavelength light L1 and the light-emitting wavelength light L3 can be worn. Through, the photoelectric module 100 can be formed on both sides to emit light to increase the convenience of use.

In addition, FIG. 5 is a schematic diagram of a photovoltaic module according to another embodiment of the present invention. Referring to FIG. 5, the first module 116 and the second substrate 126 of the above embodiment are integrally formed into a plate-like structure 210, and the first electrode layer 112a is different from the above embodiment. , the organic light emitting layer 114 is disposed on a first surface S1 of the plate structure 210, the second electrode layers 122a, 122b, the photovoltaic element 124 are disposed on a second surface S2, and the first surface S1 and the second surface S2 are mutually relatively. In other words, the photovoltaic module 200 of the present embodiment can effectively reduce the volume of the photovoltaic module 200 by integrating the light-emitting device 110 and the photoelectric conversion device 120 on the plate-like structure 210, so as to have a slim and light appearance. feature.

6 is a schematic diagram of a photovoltaic module according to still another embodiment of the present invention. Referring to FIG. 6 , in the embodiment, the light-emitting device 110 and the photoelectric conversion device 120 may be packaged by using a sealing material 150 (or a sealant), or may be sealed on the side thereof to reduce moisture or increase protection. Sex. At the same time, the control device 130 or the power storage device 140 may be packaged therein according to different requirements, and may or may not be packaged separately. However, FIG. 6 is only described with reference to the embodiments of FIGS. 1 to 3, but the present invention is not limited thereto. In another embodiment, as shown in FIG. 5, it may be sealed with a sealing material.

In summary, in the above embodiment of the present invention, the photoelectric module drives the light-emitting device correspondingly by integrating the light-emitting device and the photoelectric conversion device, and allowing the control device to detect whether the photoelectric conversion device is activated or not. The photovoltaic module can generate light with a certain wavelength range regardless of the environment. Moreover, when the photoelectric conversion device is activated, it can also achieve the effect required by the photoelectric module by passing light of a certain wavelength range, and can be stored by the light source of a fixed wavelength range and converted into electric energy. The power storage device allows the photovoltaic module to be activated in an environment in which the photoelectric conversion device is inoperable, thereby enabling the photovoltaic module to maintain its performance.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100, 200. . . Photoelectric module

110. . . Illuminating device

112. . . First electrode

112a, 112b. . . First electrode layer

114. . . Organic light emitting layer

116. . . First substrate

120. . . Photoelectric conversion device

122. . . Second electrode

122a, 122b. . . Second electrode layer

124. . . Optoelectronic component

126. . . Second substrate

130. . . Control device

140. . . Power storage device

150. . . Packaging material

210. . . Plate structure

L1. . . Light with a penetrating wavelength

L2. . . Light with absorption wavelength

L3. . . Light with an emission wavelength

S1. . . First surface

S2. . . Second surface

1 to 3 are schematic views of a photovoltaic module in different states according to an embodiment of the invention.

4A to 4C are flowcharts of a method of emitting light according to the photovoltaic module of Figs. 1 to 3.

FIG. 5 is a schematic diagram of a photovoltaic module according to another embodiment of the present invention.

6 is a schematic diagram of a photovoltaic module according to still another embodiment of the present invention.

100. . . Photoelectric module

110. . . Illuminating device

112. . . First electrode

112a, 112b. . . First electrode layer

114. . . Organic light emitting layer

116. . . First substrate

120. . . Photoelectric conversion device

122. . . Second electrode

122a, 122b. . . Second electrode layer

124. . . Optoelectronic component

126. . . Second substrate

130. . . Control device

140. . . Power storage device

L1. . . Light with a penetrating wavelength

L2. . . Light with absorption wavelength

Claims (12)

An optoelectronic module comprising: a light emitting device having a first electrode; and a photoelectric conversion device disposed on the light emitting device, wherein the photoelectric conversion device has a second electrode and a photoelectric element, wherein the first electrode The second electrode is translucent, and the photoelectric element is configured to pass light having a penetration wavelength and convert light having an absorption wavelength into electrical energy, and the absorption wavelength is smaller than the penetration wavelength. The photoelectric module of claim 1, wherein the light emitting device further has a first substrate, the first electrode is disposed on the first substrate, and the photoelectric conversion device further has a second substrate, The photoelectric element and the second electrode are disposed on the second substrate, wherein the first substrate and the second substrate are translucent. The photovoltaic module of claim 2, wherein the first substrate and the second substrate have flexibility. The photovoltaic module of claim 2, wherein the first substrate and the second substrate are a plate-like structure integrally formed, and the first electrode and the second electrode are respectively located in the plate-like structure The opposite two surfaces. The photoelectric module of claim 1, further comprising: a control device electrically connected to the light emitting device and the photoelectric conversion device, and the control device activates or deactivates the light according to the state of the photoelectric conversion device Device. The photovoltaic module of claim 1, further comprising: a power storage device electrically connected to the second electrode, wherein the electrical energy generated by the photoelectric component is transmitted through the second electrode and stored to the electrical storage device . The photoelectric module according to claim 5, further comprising: a light sensor electrically connected to the control device. A method for emitting light of a photoelectric module, the photoelectric module having a photoelectric conversion device and a light emitting device, the light emitting method comprising: starting the photoelectric conversion device to enable a light of a wavelength to penetrate the light emitting device; and starting the light emitting device The photoelectric conversion device enables an absorption wavelength of light to be absorbed by the photoelectric conversion device to generate an electric energy, wherein the absorption wavelength is smaller than the penetration wavelength. The illuminating method of claim 8, further comprising: when the photoelectric conversion device is activated, the illuminating device generates light having the penetration wavelength. The illuminating method of claim 9, further comprising: turning off the illuminating device when the photoelectric conversion device is activated. The illuminating method of claim 9, wherein the photoelectric module further comprises a power storage device electrically connected to the illuminating device and the photoelectric conversion device, and the illuminating method further comprises: absorbing the photoelectric conversion device The electric energy converted into the wavelength of the light is stored in the electrical storage device. The illuminating method of claim 11, wherein the electrical storage device transmits the stored electrical energy to the illuminating device.